Perhaps you should try some spelling variations:
zhang fang » zhang fan, zhang zhang, zhang yan
fang yuan » wang yuhan, wang yan, meng yuan
yuan jui » yuan hui, yang jui, yuan fei
yang tan » yang fan, yang dean, yang yang
wong siu » wong shiu, kong siu, wong sau
wong sam » wong sau, wong lai, von sam
sar » sara, star, saur

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 fang yuan jui (rene OR irene) yang tan ((((wong siu) OR (wong sam))) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: zhang fang yuan jui (rene or irene) yang tan ((((wong siu) or (wong sam))) or (kong sar)) ;*.