ferret around

Verb

 * 1)  To search for something by sorting through materials or (in the case of information) by speaking to contacts and following leads.
 * We need to know more about this new chap. Why don't you go to his home town and ferret around a bit? See what you can come up with.
 * We need to know more about this new chap. Why don't you go to his home town and ferret around a bit? See what you can come up with.