Use the Who, What, When, Where category values to continue refining your search. The number of results for each value are presented alongside the term in parentheses. This Narrow Search option is available throughout LUNA, on the Browse All page, and search results page.
Minimize or Expand the Narrow Search panel on the left
any time by clicking the small icon next to the “Narrow Search” tab. 
The “Show More” icon will expand each Who, What, When, Where category to give you even more choices for narrowing your search. Use the “Show Less” feature to contract the list.
Once you have selected a value to narrow your search by, you can continue to filter your search by selecting additional values.
You can easily remove one of these values by clicking on it under the “Remove” header.
A link to the Advanced Search window is available at the bottom of the Narrow Search panel.
