Using YITH WooCommerce Ajax Search you can add a search bar to your website, which will allow users to search via ajax for specific content in your website, searching through posts, pages, and products.
Once both plugins are installed and activated, zou will be able to see an additional options in YITH > Ajax Search > Search tab: make sure it is enabled so you can also search by brand name and the plugin will automatically display all products in that brand.
