Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
wang yuan » wang yuhan, wang yan, fang yuan
tan yong » tan hong, tan kong, tan yang
ran ying » fan ying, tan ying, jin ying
yang jie » yang jin, yang xi, yang yi
yang jui » yang judy, yang xi, yang yi
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 yong) OR (ran ying)) wang yuan cheng ((((yang jie) OR (yang di))) OR (yang jui)) dang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan yong) or (ran ying)) wang yuan cheng ((((yang jie) OR (yang di))) or (yang jui)) dang hai ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan yong) or (ran ying)) wang yuan cheng ((((yang jie) OR (yang di))) or (yang jui)) dang hai ;*.