Search in WordPress/WooCommerce with Solr: multi-language, Infinite Scroll, autocomplete, suggestions, dynamic filters.
jano wp and woocommerce advanced search is the best plugin for wordpress and woocommerce, autosuggest products and posts search,
Search Live supplies integrated live search facilities and advanced search features.
Search in Place improves blog search by displaying query results in real time. It displays the results dynamically as you enter the search criteria.
A WordPress plugin that replaces the default WordPress search with a lot of benefits