This specific Google search works (for example):
But it does not work for some other girls whose numbers are definitely there today. It will require that the girl's profile with phone number to have been there at a time Google trawled the site.
As you say, the above search works and francesca'a AW profile comes up.
However, when tested on a known profile who is currently displaying her number, nothing comes up.
I have also tested in a few other profiles I have in my Hot List, and none of them came up either.
Should anyone know of a better method for getting AW profiles displayed in your search result, I'd be interested.