I use this script all the time, so I thought I'd share it with you. The way it works is this:
1. Select some text that you want to filter on
2. Press F2
The text you selected will be copied to the clipboard and will be pasted in Studio's filter search box and the search will be launched.
;Filter on selected text
F2::
Send ^c
Sleep 200
Send ^{F6}
Sleep 200
Send ^v
Sleep 200
Send {Enter}
Sleep 100
Send {Control Down}{Home}{Control Up}{Down}
Return