Hi maxandbella. Hope this may help if not done so already. I am a member of another forum, is a very big and busy australian one, many who may be able to keep an eye out for your two. Many rescuers on this forum too, that often a scouring the pounds finding dogs that need foster and rescue, they may be able to keep an eye out for your two if you can get the word to them. (clear photos highly reccomended)
heres the link of the forum.
Dogz Online Forums (The Pure Breed Dog Community of Australia)
(please no one think im discrediting this lovely place, but I think DOL may be able to offer more in this instance because of its size and because it will give poster access to many local contacts that may assist in the search)
ETA.....sorry just found your post already on DOL, used a different name so didnt pick it up straight up. See if you can sneak a post into the general forum. You might get a few more looking there.
Good luck!