Hmm, I don't know but I"m sure someone will know the answer. If you to go the
particular topic (I don't think it has to be the main page, just any page in that topic) you can type in the subject matter in the white Search Topic box (let's say you were looking for a certain soup recipe, for ex) and the page will load. You'll have to search that page for the recipe but with fingers crossed you should find it.
Does that help/make sense?