yorozu

The searching is narrow down a search depends on custom field you saved. 
So, it’s basically avoid a not found. 
You’d like to use in widgets.

Search Refinement

Just another search refinement plugin depends on custom filed.

wpdreams

Ajax Search Lite is a live search plugin for WordPress. This responsive live search engine, which will boost your user experience by providing a user friendly ajax powered search form – a live search bar. You can filter the results with the category and post type filter boxes as well. Google autocomplete and keyword suggestions also included.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/qI2_iKK4n_4?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Very smooth animations with mobile device support and regular updates. Use Ajax Search Lite as a replacement for the default WordPress search with a better looking, more efficient search engine. 
Fine-tune the user experience by providing a powerful ajax search plugin to your visitors. Supports custom post types and custom fields and more. Boost your site search engine with this custom built live search engine.
<a href="https://ajaxsearchpro.com" rel="nofollow ugc">Home</a> | <a href="https://ajaxsearchpro.com/features" rel="nofollow ugc">Features</a> | <a href="https://documentation.ajaxsearchlite.com/" rel="nofollow ugc">Lite Docs</a> | <a href="https://documentation.ajaxsearchpro.com/" rel="nofollow ugc">Pro Docs</a>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/tMde9nDQOEU?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Ajax Search Lite and Ajax Search Pro does not require monthly subscriptions, does not store your data on external servers – everything is done locally, on your server.
<h4>Features List</h4>
<ul>
<li>Search in posts and pages</li>
<li>Search in custom post types such as WooCommerce Products, Events, Portfolio items and more</li>
<li>Search in title, description, excerpt, categories and tags and any custom fields</li>
<li>Archive page live loader and filter</li>
<li>Automatic search replacement as well as widget and shortcode availalbe</li>
<li>Custom Filter boxes (checkbox filters) for categories and post types</li>
<li>WPML, Polylang and QtranslateX compatible</li>
<li>10+ built in templates + options for color adjustments</li>
<li>Retina ready vectorized SVG and CSS3 icons</li>
<li>Category and post exclusions</li>
<li>Frontend search settings boxes</li>
<li>Images in search results</li>
<li>Fully ajax powered</li>
<li>50+ options on the backend</li>
<li>Caches images for faster response time</li>
<li>Performance Options</li>
<li>Google analytics integration – both as Events and Pageviews</li>
<li>Primary and Secondary ordering options</li>
<li>Highly compatible and responsive</li>
</ul>
<h4>Support</h4>
Feel free to <a href="https://wordpress.org/support/plugin/ajax-search-lite/" rel="ugc">contact us</a> via the support forums.
<h4>In Pro version</h4>
<ul>
<li><a href="https://ajaxsearchpro.com" rel="nofollow ugc">Front-end demo</a> | <a href="https://ajaxsearchpro.com/try/" rel="nofollow ugc">Back-end demo</a></li>
<li>Create multiple search bars with different configurations</li>
<li>All page builders supported (Elementor, Divi, Oxygen, Breakdance, Gutenberg, Beaver etc..)</li>
<li>Search in Every custom post type</li>
<li>Search in <a href="https://ajaxsearchpro.com/file-search/" rel="nofollow ugc">Media Attachments and contents</a> (PDF, Excel, Word, PowerPoint etc..)</li>
<li>Search in BuddyPress activity feed, users and group names</li>
<li>Search in PeepSo Groups and Group Activities</li>
<li>Search result grouping by categories or post types</li>
<li>Search in custom fields including repeaters and special custom field taypes</li>
<li>Predictive search results suggestions</li>
<li>WooCommerce <a href="https://ajaxsearchpro.com/shop-search/" rel="nofollow ugc">Shop search and filter</a></li>
<li>Search and filter Elementor <a href="https://ajaxsearchpro.com/elementor-live-filter/" rel="nofollow ugc">Loop Grid</a> and <a href="https://ajaxsearchpro.com/jet-engine-listing-grid-filter/" rel="nofollow ugc">JetEngine Listing Grid</a></li>
<li>Advanced caching technology – image precaching, search phrase caching</li>
<li>Category filters, custom field filters, post type filters, tag filters, taxonomy term filters and date filters</li>
<li>Checkbox, Drop-down, Multiselect, Radio, Slider and Range slider filters</li>
<li>Results grouping by category, post type or content type</li>
<li><a href="https://ajaxsearchpro.com/load-more-infinite-scroll/" rel="nofollow ugc">Load more and Inifinite scroll</a></li>
<li>100+ Themes – Fully configurable and editable – with theme customizer & preview window</li>
<li>4 layouts: Vertical, Horizontal, Polaroid and Isotopic (with pagination)</li>
<li>400+ Admin options </li>
<li>Google keyword suggestions and autocomplete</li>
<li>Compatibility options and features</li>
<li>Caching options & Search statistics</li>
<li>Keyword Highlighting & more…</li>
<li>Highly compatible and responsive</li>
<li><a href="https://ajaxsearchpro.com/features/" rel="nofollow ugc">Full Features List</a></li>
</ul>
<h4>Testimonials</h4>
<blockquote>
“Beyond the live search, it also makes your search much more complete. You’ll be able to include custom fields, comments, and more in your search index.” – Ben Pines – Elementor
“Consider this plugin if you’re looking for a professional live search offering.” – Tom Ewer – WPMU Dev
“Ajax Search Pro plugin gives you a live Ajax search, so much comfortable search experience” – Dragan Nikolic – Thematosoup
“As the name suggests, the core value of Ajax Search Pro is the ability to add Ajax live search to WordPress.” – Colin Newcomer – aThemes
</blockquote>

Ajax Search Lite – Live Search & Filter

Awesome Support


A very solid plugin that offers a lot of useful features out of the box.  It's pro version however is even better. Great and quick support. Highly recommend.


A very solid plugin

The Best Ajax Live Search and Filter for WordPress. Live suggestions, Custom Post types, Custom fields, Categories, WooCommerce & Elementor support

Search Refinement vs Ajax Search Lite – Live Search & Filter