Aaron Axelsen

The Advanced Search Widget is designed to be a replacement to the defaut search widget. The Advanced Search Widget allows you to search for only a 
specific post type and also select which fields to query (title, content, tags).
In addition, it is also possible to place multiple widgets onto the sidebar to search through different custom post types.

Advanced Search Widget

Allows you to add a widget to search custom post types along with other options

janothemes

The best ever plugin for wordpress and woocommerce search, it can be use to search products Or posts Or all Posts types, 
After installing use the shortcode to make the search form, which you can use in text widget, editor or in template files to create the search form.
after setting up everyting, When you type in anything thing in search box, A list of suggestions will be showed with link to all search results at the bottom of list,
live Demo and Documentation : <a href="http://www.janothemes.com/" rel="nofollow ugc">Click Here</a>
Go to the Premium Version Demo <a href="http://www.janothemes.com/premium-version/" rel="nofollow ugc">Click here</a> or <a href="https://www.fiverr.com/brilliantcoder/give-you-jano-wp-advance-search-plugin-f1769347-4702-48d0-8bdc-a87af45ab209" rel="nofollow ugc">Buy Now</a>
features :
<ul>
<li>Show post image in search result.</li>
<li>Show price of products(woocommerce products) in search result.</li>
<li>Show woocommerce on Sale product tag in search result.</li>
<li>Show Excerpt in search result.</li>
<li>Show Categories in search result.</li>
<li>Show Tags in search result.</li>
<li>Multiple form designs.</li>
</ul>
<h3>Translators === Available Languages =* English (Default)* ducth</h3>

jano wp and woocommerce advanced search

Simple and efficient

jano wp and woocommerce advanced search is the best plugin for wordpress and woocommerce, autosuggest products and posts search,

Advanced Search Widget vs jano wp and woocommerce advanced search