Below the search box, select the type of results: All, Images, Videos, or Books. At the bottom part of the search box, click Tools. Under Tools, click Advanced Search.

First of all, even though the link is gone, you can still access this service by clicking on the gear in the upper right hand corner of Google next to "Sign in." Advanced search is on the drop down menu. So really the only change is two clicks instead of one.

Advanced search options are filters offered by most search engines. They narrow the scope of a search query to eliminate irrelevant information to help you find the exact content you're looking for.

If you want to find results that use a very specific phrase, surround your search term in quotation marks to tell Google you only want to see results that match that exact phrase. This is helpful on multiple occasions.