S: (n) manhunt (an organized search (by police) for a person (charged with a crime))
S: (n) quest, seeking (the act of searching for something) "a quest for diamonds"
S: (n) ransacking, rummage (a thorough search for something (often causing disorder or confusion)) "he gave the attic a good rummage but couldn't find his skis"
S: (n) scouring (moving over territory to search for something) "scouring the entire area revealed nothing"
S: (n) shakedown (a very thorough search of a person or a place) "a shakedown by the police uncovered the drugs"
S: (v) frisk (search as for concealed weapons by running the hands rapidly over the clothing and through the pockets) "The police frisked everyone at the airport"