Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
wang yang » wang yan, wang liang, wang yanling
hua rene » hua ren, juan rene
ying jin » yang jin, jing ji, yang jie
yang lin » yang jin, wang lin, yang li
wong yue » wang yue
dan hua » tan hua, wang hua, dong hua

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 (wang yang)) dan hua rene ((ying jin) or (yang lin)) ((wong yue) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan cheng) OR (wang yang)) dan hua rene ((ying jin) OR (yang lin)) ((wong yue) OR (hong yu)) ;.
• Adding a wildcard symbol may retrieve word variants: ((yuan cheng) or (wang yang)) dan hua rene ((ying jin) or (yang lin)) ((wong yue) or (hong yu)) ;*.