Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, tan cheng
rene wang » wen wang
yu cheng » yu chen, _ cheng
tuan hua » tuan vu, yuan hui
wang qin » wang lin, wang qiao, wang jing
qin hong » tin hong, min hong, amin hong
tan hua » wang hua, tan chia, tan puay
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan cheng) or (yu cheng)) ((tan hua) OR (tuan hua)) rene wang qin hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan cheng) OR (yu cheng)) ((tan hua) OR (tuan hua)) rene wang qin hong yu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan cheng) or (yu cheng)) ((tan hua) OR (tuan hua)) rene wang qin hong yu ;*".