Perhaps you should try some spelling variations:
liang yang » wang yang, yang yang, huang yang
liang ying » liang liying, huang ying, zhang ying
chang ann » chang min, chang won, chang yun
chan ming » kian ming, chan eng, chan fong
jeong su » jeong _, jeong mi, jeong 情
di chen » yi chen, li chen, jui chen

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 ((liang yang) OR (liang ying)) di chen ((chang ann) OR (chan ming)) jeong su ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang yang) OR (liang ying)) di chen ((chang ann) or (chan ming)) jeong su ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((liang yang) OR (liang ying)) di chen ((chang ann) or (chan ming)) jeong su ;*.