Well, if you breed an Albino to a het Axanthic, you will get double possible hets, and all of them will be 100% het Albino, 50% Axanthic.
THEN! You'd have to breed all of the babies together to hope that you will hit on the double hets breeding together, and IF you get that pairing, you will have a 1/16 chance of hitting on the Snow.