Hi Gerda,
Currently the ingredient search does a text search across the recipe, and it does separate the terms by design for now. (This is in part related to the fact that we want recipes for "Chicken Teriyaki" and "Teriyaki Chicken" to show the same full set of results and thought that this kind of over-searching was a lesser evil.) The perfect long term solution would be to treat them as ingredient (not text) searches. While that's our long-term plan, it's not in plan for the next few months, and you'll have to live with some extra results to wade through. Sorry, but hope that helps you understand why & what's going on.