Perhaps you should try some spelling variations:
yuhan cheng » yuan cheng, yunnan sheng
wang yuhan » wang luhang, wang yan, wang yidan
tan ying » fan ying, ran ying, tan yang
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang jui, yang yi
yang xi » yang di, yang yi, yang jui
hai » hadi, haji, hari

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: ((tan ying) OR (li ying)) wang yuhan cheng ((((yang jin) OR (yang jie))) OR (yang xi)) dang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan ying) or (li ying)) wang yuhan cheng ((((yang jin) OR (yang jie))) or (yang xi)) dang hai ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan ying) or (li ying)) wang yuhan cheng ((((yang jin) OR (yang jie))) or (yang xi)) dang hai ;*.