Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
yong yang » yang yang, dong yang, ying yang
chang min » zhang ming, chang mae, chang ann
chan ming » kian ming, chan eng, chan fong
shang hai » shang kai, dang hai, chang ha
hong yu » wong yue
di han » ti han

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 yong yang di han ((chang min) OR (chan ming)) ((shang hai) OR (hong yu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong yang di han ((chang min) OR (chan ming)) ((shang hai) or (hong yu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong yang di han ((chang min) OR (chan ming)) ((shang hai) or (hong yu)) ;*.