Conducted bag search thoroughly (7)
I believe the answer is:
ransack
'search thoroughly' is the definition.
(synonyms)
'conducted bag' is the wordplay.
'conducted' becomes 'ran' (I've seen this in another clue).
'bag' becomes 'sack' (both can mean a container).
'ran'+'sack'='RANSACK'
(Other definitions for ransack that I've seen before include "Pillage, plunder" , "Loot or search thoroughly" , "Examine thoroughly" , "Plunder - rummage" , "Plunder or turn upside down in search" .)