by John Turner on WordPress.org
Add a Custom Google Site Search with no setup. Just drag and drop a widget and you're done.

Just add the widget to your theme.
Easily setup a full text site search powered by Google.
Normally to setup a Google Custom Search on your site you have to sign up on Google and create the search index. This plugin will do it automatically using Google’s Linked Custom Search Engines
This plugin is built and maintained by SeedProd