On the left side of the search results page is many different filters, called facets, which you can use to help narrow your search. These include: Subject Area, Readership Level, Recommendation level, Review Date range, Format, Outstanding Academic Titles, and Community College Titles. Once one of these filters is applied it will apear at in a small box at near the top of the page. The clear the filter you can either click on the little "x" in the box, or click on the "Clear Results" Button.