Hi, thanks for playing, first of all! You're not likely to find much info on line because this game remains super obscure (and I've done my best to delude myself into thinking that I like it that way), but I'd be happy to provide a few hints.
Firstly, you're very much on the right track. There isn't always one single phrase per zone. I think the desert area, due to its size, has at least two (the ones you found are both phrases, I believe). The important thing is that a phrase's location, or the method by which it is revealed, matches one of the hints on the fridge. If I recall correctly, As Above So Below doesn't have a hint associated with it, so it's not one of the phrases you need for the cypher.
I hope that helped at least a little but. I'd be glad to provide more hints if you want them.