Perhaps you should try some spelling variations:
cheng ying » cheng ling, cheng ming, chen yang
cheng bing » cheng ling, cheng ming, chen ping
yang yang » wang yang, wang yan
nan yang » dan yang, nan yan, tan yang
yang jin » yang jie, yang jun, ying jin
kong siu » kong eiu, dong sin, kong sar
wong siu » wong shiu, wong sau, wong siew

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: nan yang yang jin ((cheng ying) OR (cheng bing)) jin ((kong siu) OR (wong siu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nan yang yang jin ((cheng ying) OR (cheng bing)) jin ((kong siu) or (wong siu)) ;~".
• Adding a wildcard symbol may retrieve word variants: nan yang yang jin ((cheng ying) OR (cheng bing)) jin ((kong siu) or (wong siu)) ;*.