Dana Ross

Dave’s WordPress Live Search adds “live search” functionality to your WordPress site. As visitors type words into your WordPress site’s search box, the plugin continually queries WordPress, looking for search results that match what the user has typed so far.
The <a href="http://ajaxpatterns.org/Live_Search" rel="nofollow ugc">live search</a> technique means that most people will find the results they are looking for before they finish typing their query, and it saves them the step of having to click a submit button to get their search results.
This functionality requires Javascript, but the search box still works normally if Javascript is not available.
http://www.youtube.com/watch?v=7CGR2bJ1mLM 
<a href="https://plugins.svn.wordpress.org/daves-wordpress-live-search/assets/intro_video_transcript.txt" rel="nofollow ugc">transcript</a>
This plugin is compatible with the <a href="https://wordpress.org/extend/plugins/xlanguage/" rel="ugc">xLanguage</a> and <a href="http://wpml.org/" rel="nofollow ugc">WPML</a> plugins for internationalization (i18n) of search results.
<h3>Filters</h3>
See <a href="https://plugins.svn.wordpress.org/daves-wordpress-live-search/trunk/filter_examples.php" rel="nofollow ugc">filter_examples.php</a> in 
the plugin files for examples of how to use these filters. Remember, these filters only affect the 
Dave’s WordPress Live Search display, not the normal WordPress search results or the posts themselves.
<ol>
<li>dwls_alter_results</li>
<li>dwls_attachment_thumbnail</li>
<li>dwls_post_title</li>
<li>dwls_the_excerpt</li>
<li>dwls_post_date</li>
<li>dwls_author_name</li>
<li>dwls_alter_result_template</li>
<li>dwls_post_custom</li>
<li>dwls_query_fields</li>
</ol>
<h3>Wish List</h3>
Features I want to implement in future releases:
<ol>
<li>“No results found” message (optional)</li>
</ol>

Dave's WordPress Live Search

At first, this seems like a good plugin and it is. I tried to report a bug a couple of months ago and, despite the fact the plugin says it's compatible with the latest version of WordPress, there seems to be bugs that are not addressed. At this point, I had to hack the plugin and edit source code to make it work.

Unmaintained plugin

You do a great job

Adds "live search" functionality to your WordPress site. Uses the built-in search and jQuery.

ThemeHunk

ThemeHunk Advance Product Search – Fastest Ajax based live search plugin for WooCommerce. Supports live search and search results page display.
TH Advance Product Search is a powerful product search plugin designed to improve the default product search experience. It adds Ajax product search, live search results, and category-based search, allowing customers to find products quickly without page reloads.
This Advance Product Search plugin is a powerful AJAX based search plugin which will display result for Product, Post and Pages. This plugin is capable to search across all your WooCommerce products ( Product title, Description, Categories, ID and SKU ). Plugin comes with user friendly settings, You can use shortcode and widget to display search bar at your desired location.
This plugin enhances product discovery, reduces search friction, and helps customers reach the checkout faster.
<a href="https://wpthemes.themehunk.com/advanced-product-search/" rel="nofollow ugc">Live Demo</a> | <a href="https://themehunk.com/docs/th-advance-product-search/" rel="nofollow ugc"> Documentation </a> | <a href="https://themehunk.com/advanced-product-search/" rel="nofollow ugc">More Details</a> | <a href="https://themehunk.com/contact-us/" rel="nofollow ugc">support</a> | <a href="https://themehunk.com/advance-product-search/#price" rel="nofollow ugc">get PRO</a> |.
Key Features:-
⭐ Ajax Product Search for WooCommerce 
⭐ Advanced Product Search 
⭐ Live Search Results Dropdown 
⭐ Fast and Lightweight Search 
⭐ Quick and Fast Search 
⭐ Fully Responsive & Mobile Friendly 
⭐ Search product search for WooCommerce 
⭐ Search Analytics Support 
⭐ Advanced Search for WooCommerce Product ( Categories, Description, Image, Price, SKU’s ) 
⭐ Advanced Search for Post ( Categories, Description & Image ) 
⭐ Advanced Search for Pages ( Description & Image ) 
⭐ Search using AJAX search 
⭐ Exclude specific content from search results 
⭐ Color Manager options for each Search element 
⭐ Supports multilingual 
⭐ Display Search Forms anywhere on your site. 
⭐ Autocomplete Search 
⭐ Fully compatible with WordPress Themes 
⭐ User Friendly Customize Panel 
⭐ 24×7 support available for free product too
Pro Features:-
⭐ Search Products, Page and Post using AJAX Search. 
⭐ Custom attributes and Hooks 
⭐ Plugin specially developed for WooCommerce product search, Search content from all your website pages, Search post content (like title, description, category). 
⭐ Product Search Scope like Search in Category, Tag, SKU, Attributes, Description and Short Description. 
⭐ Pro version has Search Bar Display Options like Shortcode, Search Widget, Menu and PHP code. 
⭐ Pro version comes with Unlimited Color options for Search elements 
⭐ It also Supports multilingual 
⭐ Fully Responsive & Mobile Friendly 
⭐ Display Search Forms anywhere on your site. 
⭐ Fully compatible with WordPress Themes 
⭐ User Friendly Customize Pane 
⭐ Priority 24×7 support available
💡 Why Improve Advance Product Search?
The default Product Search is limited. A smarter Advance product search helps customers:
<ul>
<li>Find products instantly</li>
<li>Reduce frustration and bounce rate</li>
<li>Complete purchases faster</li>
</ul>
🔍 Ideal Use Cases
<ul>
<li>Stores with large product catalogs</li>
<li>Stores needing faster and more accurate search</li>
<li>Shops using category-based navigation</li>
<li>Any store that wants better search functionality</li>
</ul>
⚙️ Built for Better Product Discovery
TH Advance Product Search improves how customers interact with your store by making search faster, smarter, and more intuitive. A better search experience leads to better engagement and higher conversions.
MORE PLUGINS FROM US
Here are some additional plugins that were made with love.
<a href="https://wordpress.org/plugins/lead-form-builder/" rel="ugc">Contact Form</a> – Contact Form & Lead Form Elementor Builder 
<a href="https://wordpress.org/plugins/th-all-in-one-woo-cart/" rel="ugc">Cart for Woocommerce</a> – All In One Woo Cart is a perfect choice to display Cart on your website and improve your potential customer’s buying experience. 
<a href="https://wordpress.org/plugins/wp-popup-builder/" rel="ugc">Popup Builder</a> – Popup Forms , Marketing PoPuP & Newsletter 
<a href="https://wordpress.org/plugins/th-product-compare/" rel="ugc">Product Compare</a> – Product Compare plugin helps you to create interactive product comparison tables. 
<a href="https://wordpress.org/plugins/th-variation-swatches/" rel="ugc"> Variation Swatches</a> – Variation Swatches is a Free easy to use for WooCommerce Swatches Plugin
<h3>Supported Themes</h3>
These themes have been tested and are compatible with search plugin without significant issues. Also you can use this plugin to your Block, Elementor:
<ul>
<li><a href="https://wordpress.org/themes/th-shop-mania/" rel="ugc">TH Shop Mania</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/top-store/" rel="ugc">Top Store</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/open-shop/" rel="ugc">Open Shop</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/zita/" rel="ugc">Zita</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/big-store/" rel="ugc">Big Store</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/m-shop/" rel="ugc">M Shop</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/royal-shop/" rel="ugc">Royal Shop</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/open-mart/" rel="ugc">Open Mart</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/gogo/" rel="ugc">GoGo</a> – by ThemeHunk</li>
<li><a href="https://wordpress.org/themes/twentytwentytwo/" rel="ugc">Twenty Twenty-Two</a> – by WordPress.org</li>
<li><a href="https://wordpress.org/themes/hello-elementor/" rel="ugc">Hello Elementor</a> – by Elementor</li>
<li><a href="https://wordpress.org/themes/oceanwp/" rel="ugc">OceanWP</a> – by oceanwp</li>
<li><a href="https://wordpress.org/themes/neve/" rel="ugc">Neve</a> – by Themeisle</li>
<li><a href="https://wordpress.org/themes/go/" rel="ugc">Go</a> – by GoDaddy</li>
<li><a href="https://wordpress.org/themes/generatepress/" rel="ugc">GeneratePress</a> – by Tom</li>
<li><a href="https://wordpress.org/themes/hestia/" rel="ugc">Hestia</a> – by Themeisle</li>
<li><a href="https://wordpress.org/themes/colibri-wp/" rel="ugc">Colibri WP</a> – by Extend Themes</li>
<li><a href="https://wordpress.org/themes/kadence/" rel="ugc">Kadence</a> – by Ben Ritner – Kadence WP</li>
<li><a href="https://wordpress.org/themes/astra/" rel="ugc">Astra</a> – by Brainstorm Force</li>
<li><a href="https://wordpress.org/themes/kubio/" rel="ugc">Kubio</a> – by Extend Themes</li>
<li><a href="https://wordpress.org/themes/zakra/" rel="ugc">Zakra</a> – by ThemeGrill</li>
<li><a href="https://wordpress.org/themes/storefront/" rel="ugc">Storefront</a> – by Automattic</li>
<li><a href="https://wordpress.org/themes/onepress/" rel="ugc">OnePress</a> – by FameThemes</li>
<li><a href="https://wordpress.org/themes/blocksy/" rel="ugc">Blocksy</a> – by creativethemeshq</li>
</ul>

Advance Product Search- Voice & Ajax Search for WooCommerce

Advanced Product Search boosts your store search with instant AJAX results, live suggestions helping customers find products faster.

Dave's WordPress Live Search vs Advance Product Search- Voice & Ajax Search for WooCommerce