Using “poway” as the search text is a good one as most of the areas you seem to be interested in feed the Poway Unified School District and they will tend to include that fact in their listings. You can also swap it out for the other areas you mentioned to pick up others. Using “bernardo” rather than “rancho bernardo” will give you better results. You should also try “4s” (West RB).
The query above spat out a good number of results, so I’m sure you should be able to find something that suits you.
