ivanra10

This plugin allows to customize the Custom Google Search inside your posts.
You can change language, theme, a search field for every post.
Requires PHP 5.3.x

WP Custom Google Search

A customizable google search plugin for posts.

alvaron

binariointernet

Includes Product Custom Fields to WooCommerce Search Criteria on the front end and wp-admin
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More info about the plugin: http://www.wpworking.com/ 
Ask for support on wpworking@wpworking.com

WooCommerce Custom Field Product Search

Includes Product Custom Fields to WooCommerce Search Criteria on the front end and wp-admin

WP Custom Google Search vs WooCommerce Custom Field Product Search