Scour or hunt for (4)
I believe the answer is:
seek
This clue is a double definition.
'scour' is the first definition.
(I know that scour is a more specific form of seek)
'hunt for' is the second definition.
(I've seen this in another clue)
(Other definitions for seek that I've seen before include "Attempt - search" , "Hunt, look for" , "Ask for (permission)" , "Try to find" , "Attempt to find; ask for" .)