UPDATE 14/03/2014: Version 0.3.1 has been released on wordpress.org get it using the download above. It removes all duplicates and has compatibility with WPML plugin as well as testing up to wordpress 3.8.1 and woocommerce 2.1.5
The default install of woocommerce does not come with any searching capabilities based on the tags that can be assigned to each product.
I have written this plugin to add this capability to the search on both the front end of your woocommerce site and in the wordpress admin site. There is no extra config apart from installation and activation of the plugin.
You can search by multiple tags by splitting your search with a comma. For example to search for all products tagged with toys and helicopter enter into the search box: “toys, helicopter” and all products with those tags will be returned in the search.
The search functionality in woocommerce doesn’t search by product tags by default. This simple plugin adds this functionality to both the admin site and regular search. It is very useful if you want to add some extra meta information to a product that will increase the discoverability on certain products.
If you have any issues or feedback feel free to leave a comment on this post and I will try and sort is as soon as possible
Disclaimer: This plugin does a mysql query with several joins upon each search. If you have an extremely large store (Eg 20, 000 products) you may be better off using a more generic search solution that builds its own optimised indexes for more speedy searching. If however you own a comparatively small store (less than 5, 000 products) this plugin will probably suit you better.