Check out how ExpertRec custom search engine enhances WooCommerce search with autocomplete, spell correct, filters and super fast relevant search results which also provides complete UI and search ranking controls.
I have been using ExpertRec for my website for voice search and product search and the results are remarkable. Not much of a Hassel when it comes to its application as well. Pretty easy to install as a plug-in and a great deal when it comes to applying it to use.
I started using WP Fastest Site Search by Expertrec a few weeks ago and I am extremely impressed with the search capabilities. I love that visitors to our website can either type and voice search for the particular information. I love that suggestions appear as soon as you start to type. It truly is fast, efficient and very affordable.