From: Pittsburgh, PA
I did some researching and here's what I found out. The search tool for your art case doesn't search for keywords. It only searches the title of the piece. However, the search tool for the EBSQ galleries, for example, searches for words in your title, the body of your artist statement, and your keywords for any given piece. I'm not sure why the search parameters are different for those two tools, but that's the way things currently are.
Get out of the vacuum and express yourself!