Your best source for finding answers to your question might be Flavius Josephus, a first-century Jewish historian. Following is a link to one discussion:
The 10 Lost Tribes of Israel
Another source is a book and also a DVD presented as a program on A&E titled "Quest for the Lost Tribes" by Simcha Jacobovici. You can read interesting reviews of the book on any of the major book seller's websites.
This can be a confusing subject because some commentators say that the tribes were never really lost. Another said that the tribe of Manasseh (their spelling) was recently discovered in northeast India.