Most searches (not specicially EYB) search for all words first then for any words
So the first pass is recipes mentioning pork and fillet
Then you get any mention of pork and may get results for fish fillets too as the words are pulled out separately
To search for an exact phrase you use "pork fillet" complete with quotes
I'm not sure about the sort order, it has puzzled me a bit, my guess is newest results added to the database first?