Google Docs now lets you run advanced searches for documents, spreadsheets and presentations. You can search by document type, date modified, who the documents are shared with and more. Once you set up a search, you can save your search criteria to easily run the same search at a later time
Standard, Premier, Education, Team and Partner Editions
How to access what's new:
Sign in to Google Docs and click "Show search options". After entering your search criteria, click "Save this search" to have Google Docs remember the properties for your search. To run a saved search, choose the search you want from the "Saved searches" menu in the left panel or next to the search box at the top of the screen.
For more information: