So you're not connected to any ultrapeers, peers or leafs? Does your connecttion status show 'starting connection'? Try going file > disconnect, then file > connect...does anything happen? If you're not connected, you won't see search results.
Check the thread below for some tips
Blank results page
Otherwise, have a look at the sticky below for more info about connection problems
Connection problems? Check here first!
If you're stuck, post your details. Post #2 of the sticky shows the info we need.