Perhaps you should try some spelling variations:
yuhan cheng » yuan cheng, yunnan sheng
wang yuhan » wang luhang, wang yan, wang yidan
ying wang » ping wang, ying yang, ying chang
dang hadi » dang hai
ran ying » fan ying, tan ying, jin ying
yang jui » yang judy, yang yi
yang xi » yang yi

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: ran ying wang yuhan cheng ((((((pang jun) OR (yang jui))) OR (yang di))) OR (yang xi)) dang hadi ;~.
• Adding a wildcard symbol may retrieve word variants: ran ying wang yuhan cheng ((((((pang jun) or (yang jui))) or (yang di))) or (yang xi)) dang hadi ;*.