Perhaps you should try some spelling variations:
chen cheng » chen chung, chen zheng, chen zhen
cheng bing » cheng ling, cheng ming, chen ping
wong siu » wong shiu, wong sau, wong siew
kong siu » kong eiu, dong sin, kong sar
yuan zi » yuan li, yuan fei, yuan hui
yan zi » yan zhi, ban zi
wang » wing, wan, 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 yan ((yan zi) OR (yuan zi)) chen cheng bing ((wong siu) OR (kong siu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((yan zi) or (yuan zi)) chen cheng bing ((wong siu) OR (kong siu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ((yan zi) or (yuan zi)) chen cheng bing ((wong siu) OR (kong siu)) ;*.