Perhaps you should try some spelling variations:
chen cheng » chen chung, chen zheng, chen zhen
cheng ming » cheng bing, cheng ling, chen ping
tong shui » tong hui, cong shu, gong hui
kong shu » cong shu, kong siu, kong sar
yuan li » yuan lin, guan li, dayuan li
yuan zi » yan zi, yuan fei, yuan hui
wang » wing, lang

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: (wang OR wan) yan ((yuan li) OR (yuan zi)) chen cheng ming ((kong shu) OR (tong shui)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) yan ((yuan li) OR (yuan zi)) chen cheng ming ((kong shu) or (tong shui)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yan ((yuan li) OR (yuan zi)) chen cheng ming ((kong shu) or (tong shui)) ;*.