try getting someone else to look for ur tama with you. when some one else is looking for something which you spend hours searching for they find it within a few minets.
Its probally dead, tamas die within 6-7 hours. But listen for a beep in case it isn't, other wise, clean the house and look, if you still cant find it then your probally lost it in a public place and it is lost for good v.v My sympathy is with you.