Perhaps you should try some spelling variations:
yuhan cheng » yuan cheng, yunnan sheng
wang yuhan » wang luhang, wang yan, wang yidan
shang kai » shang hai
yin wang » yan wang, yin fang, yin hang
yang jie » yang jin, yang di, yang jui
wan yin » fan ying, ran ying, tan ying
yang xi » yang di, yang jui
yang yi » yang di, yang jui

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 yin wang yuhan cheng ((((yang judy) OR (((yang jie) OR (yang xi))))) OR (yang yi)) shang kai ;~.
• Adding a wildcard symbol may retrieve word variants: wan yin wang yuhan cheng ((((yang judy) or (((yang jie) or (yang xi))))) or (yang yi)) shang kai ;*.