rummage around
To dig or root around aimlessly (in or through some cluttered location). Usually used in the continuous tense. I think I can hear Tom rummaging around up in the attic again. A raccoon had gotten into the dumpster and was rummaging around for something to eat. He walked into the office and caught two men rummaging around.
rummage around (somewhere) (for something)
to move things about haphazardly while looking for something somewhere. Alice rummaged around in the drawer for a candy bar she had been saving. After she rummaged around for the candy bar, she found it. She rummaged around in the old trunk.