Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan wang » yuan wang, yan wang, yuhuan huang
kong your » kong young, knowing your
wang hai » dang hai, wang hui, shang hai
yang jin » yang jie, yang jun, ying jin
wong sam » wong sau, wong lai, kong sar
yang yi » yang xi, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhan wang hai ren ((yang jin) or (((yang yi) or (yang di)))) ((wong sam) or (kong your)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan wang hai ren ((yang jin) OR (((yang yi) OR (yang di)))) ((wong sam) OR (kong your)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yuhan wang hai ren ((yang jin) or (((yang yi) or (yang di)))) ((wong sam) or (kong your)) ;*.