Rogets II: The New Thesaurus, Third Edition. 1995.
rummage
VERB:
To make a thorough search of: comb, forage, ransack, scour1. Slang :shake down. Idioms: beat the bushes, leave no stone unturned, look (or search) high and low, look (or search) up and down, turn inside out, turn upside down. SeeINVESTIGATE.