a medical examination

check into thoroughly

to search; investigate

dig into task, action

inquire

ask about

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

investigate; survey

to examine, study, (something) carefully

check into thoroughly

to search (a place) untidily and thoroughly

turn inside out in search; ravage

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

investigate; survey

to put (something), separate (something) by putting, through a sieve; to examine something carefully

take out residue; remove impurities