WooCommerce Search & Filter Extension
WooCommerce already comes with everything you need to bring your store online to sell all kinds of physical and digital products. With the WooCommerce Search & Filter Extension, you can build custom search forms for your website. This plugin lets your site visitors search products by category, tags, and attribute.
Thanks to this extension, you can create smart search forms to let your visitors search by keyword, tag, categories, rating, and price range. It supports multi-column search forms. You get a visual form builder to make quick changes. Webmasters have the option to change background, text, and elements color.
This plugin comes with search widgets that you can display all over your website. It has auto submission capability. You can find out more about it here.