Perhaps you should try some spelling variations:
yuhan cheng » yuan cheng, yunnan sheng
wang yuhan » wang luhang, wang yan, wang yidan
dang hari » dang hai
ran ying » fan ying, tan ying, jin ying
yang jui » yang judy, yang yi
ka ying » ku ying, fan ying, gao ying
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) OR (ka ying)) wang yuhan cheng ((((yang jui) OR (yang xi))) OR (yang di)) dang hari ;~.
• Adding a wildcard symbol may retrieve word variants: ((ran ying) or (ka ying)) wang yuhan cheng ((((yang jui) or (yang xi))) or (yang di)) dang hari ;*.