Perhaps you should try some spelling variations:
cheng shang » cheng zhang, chen shuang
wang liang » wang yang
liang dean » liang dan, yang dean, lane dean
cheng han » chen hao
john song » john wong, john bonn, john ngosong
kim song » kim young, kim eung
dean yu » dian yue

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 liang dean yu ((cheng shang) OR (cheng han)) ((john song) OR (kim song)) so ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang dean yu ((cheng shang) or (cheng han)) ((john song) or (kim song)) so ;*.