Let’s say you have a large cache of documents in Google Docs. And then there’s the overflowing Gmail too with attachments and all. How do you begin to search through this haystack for the proverbial needle? You take the help of the Labs feature in Gmail.
Log into your Gmail account and click on the wrench icon to go to the Settings page. Select and display the Labs tab which displays all the experimental apps for Gmail. Scroll down to the Apps Search lab feature which should be somewhere near the top itself. Click Enable and Save. Now, any search that you initiate within Gmail will also search through your Google documents, and the doc results will appear beneath the Gmail results.
This app is very useful if you are someone like me who saves a lot of attachments and notes (culled from Gmail) in Google Docs.