Perhaps you should try some spelling variations:
friedman john » friedmann john, friedman born, friedman jed
der friedman » die friedman, fred friedman, _ friedman
john wong » john song, john bonn
yang jie » yang jin, yang xi, yang yi
yang jui » yang judy, yang xi, yang yi
wong sau » wong sam, wong siu, wong shiu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: zhang yuqin ((((yang jie) OR (yang jui))) OR (yang di)) der friedman john wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: zhang yuqin ((((yang jie) or (yang jui))) or (yang di)) der friedman john wong sau ;*.