Whare can i find "adventures of tintin and snowy" comic books?

Try all the second hand stores, they might know where to get them. Advertise in your local newspaper, someone might be holding onto some of them. Your local newsgroup (if they still exist) is another good place to advertise.

You can try a local comic book store. Most of them will have Tintin. Or least can them for you alot better than a bookstore.

You should be able to find the entire series of the American printed books at most major bookstores or online. They've recently reprinted them in hardcover, each volume containing three books. I think the only two they're missing are Tintin in the Land of the Soviets and Tintin in the Congo, along with the unfinished Tintin and the Alpharts (No idea about this one).