Perhaps you should try some spelling variations:
wang danning » wang yanling, wang daoping, wang yangming
brief john » brian john
john wong » john song, john bonn
yang jui » yang judy, yang xi
de brief » der brief, die briefe, a brief
wong sau » wong sam, wong siu, wong shiu
yang yi » yang xi

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: wang danning ((((yang yi) OR (yang jui))) OR (yang di)) de brief john wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: wang danning ((((yang yi) or (yang jui))) or (yang di)) de brief john wong sau ;*.