Yes, put up flyers or at least inform neighbors. Don't give up looking. Look first thing in the morning, when the sun is up. He'll be wanting to warm himself up after the night. Be sure to get on their level and look under every bush, rock, nook and cranny. Good luck, glad you found one.
I lost my 3 year old sully yesterday. Escaped from an outdoor pen... Finally found it in the woods and the only reason I found it was because I heard her. Get down to its level and feel everything. Under bushes, anything it could be hiding under. Maybe place a heat light with some food in your yard at night and see if it will come to eat. They usually try to find sun early morning