There is no such thing as .32 S&W Short, which may be why you can't locate any. There is .32 S&W and .32 S&W Long. While many folks call the .32 S&W "Short", the ammo makers do not use the word "Short" in the name or on the box.
.32 S&W is sometimes hard to get; it is not a big seller any more and the ammo makers just run off a batch every so often.
Jim