Perhaps you should try some spelling variations:
yang john » young john, yang jin, yang jun
yan yang » yang yang, yao yang, dan yang
yu cheng » yu chen, _ cheng
wong sau » wong siu, wong shiu, wong lai
wong sam » wong lai, kong sar, von sam
wan yan » wang yan, nan yan, wai yan
yang yu » yang yue, yang yun, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan yang yu cheng ((yang john) or (king john)) ((wong sau) OR (wong sam)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan yang yu cheng ((yang john) OR (king john)) ((wong sau) OR (wong sam)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan yang yu cheng ((yang john) or (king john)) ((wong sau) OR (wong sam)) ;".
• Adding a wildcard symbol may retrieve word variants: wan yan yang yu cheng ((yang john) or (king john)) ((wong sau) OR (wong sam)) ;*.