Just thougt that I could give you a list of some common terms in polymerclay in Finnish to help you with finding clay in google - I wish others would contribute to this thread too as I am sure I am not the only one interested in clay in odd languages

Polymer Clay = askartelumassa (no straigth translation, but the most used word),
sometimes also massa or massat
To mold, to clay = muovailla
Claying = massailu, massailla
Bead, beads = helmi, helmet

If you google them up you might find plenty of sites I have something to do. As I was saying in my introduction we still are a very young clay culture but the craft community is slowly starting to get more involved with clay.