Perhaps you should try some spelling variations:
cheng ming » cheng bing, cheng ling, zhang ming
yang weng » huang weng, yang yang, yang jing
weng fang » jing fang, wen wang
chen ping » chen rong, chen yang, chen wang
nan yang » dan yang, nan yan, tan yang
kim song » kim young, kim eung
song siu » kong siu, wong siu, song shin

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 weng fang ((cheng ming) OR (chen ping)) kim song siu ;~.
• Adding a wildcard symbol may retrieve word variants: nan yang weng fang ((cheng ming) or (chen ping)) kim song siu ;*.