Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
wang yuan » wang yuhan, wang yan, fang yuan
shang kai » shang hai
ran ying » fan ying, tan ying, jin ying
yao yang » yang yang
yang jie » yang jin, yang jui, yang yi
yang xi » yang yi, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ran ying) or (yao yang)) wang yuan cheng ((yang jie) or (((yang xi) or (yang di)))) shang kai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ran ying) OR (yao yang)) wang yuan cheng ((yang jie) OR (((yang xi) OR (yang di)))) shang kai ;.
• Adding a wildcard symbol may retrieve word variants: ((ran ying) or (yao yang)) wang yuan cheng ((yang jie) or (((yang xi) or (yang di)))) shang kai ;*.