Perhaps you should try some spelling variations:
yan clan » das clan, yan guan, yan yuan
clan hua » tan hua, tuan hua
wong sau » wong sam, wong shiu, wong lai
wong siu » wong shiu, kong siu, wong siew
wan yan » wang yan, nan yan, wai yan
hua ren » hua chen
yan jie » yang jie, yan jiu, yang jin
von sam » von sa, von sap, von scham

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: wan yan clan hua ren yan jie ((((((von sam) OR (wong sau))) OR (kong sar))) OR (wong siu)) ;~.
• Adding a wildcard symbol may retrieve word variants: wan yan clan hua ren yan jie ((((((von sam) or (wong sau))) or (kong sar))) or (wong siu)) ;*.