Charles

to look over; to examine; to check up; to ferret out

to find out; to discover

to investigate and find out; to ascertain

to search for; to look up

investigation; inquiry; to investigate; to survey; survey; (opinion) poll; CL:項|项[xiang4],個|个[ge4]

inspection; to examine; to inspect; CL:次[ci4]

to search

(name) Richard

to try to find out; to trace; to track down