to search; investigate

dig into task, action

to travel into or through (a country etc) for the purpose of learning about it

investigate; survey

to put (something) upside down or in the opposite position or order

reverse; turn upside down

to go to or near (a place or area occupied by enemy forces) to learn about their position, strength etc

investigate; survey

to turn things over, move things about, while looking for something

ransack, search

to cause (a person, large package etc) to be upside down

reverse; turn upside down