Arrange search (4)
I believe the answer is:
comb
I believe this clue is a double definition.
'arrange' is the first definition.
(I've seen this before)
'search' is the second definition.
(I know that comb is a more specific form of the action search)
(Other definitions for comb that I've seen before include "Hair-tidier" , "Fastening spikes" , "Tidy (hair); some honey" , "Carefully search" , "Arrange" .)