Perhaps you should try some spelling variations:
wang danning » wang yanling, wang daoping, wang yangming
ghana china » china china, ghana ghana
chen zhang » cheng zhang, zhen zhang, chen zheng
long trinh » long trip, long thanh
zhang hui » zhang yuhui, zhang shuo, chuang hui
yang jin » yang jie, yang jun, ying jin

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 danning ((ghana china) OR (yang jin)) chen zhang hui ((wang zhi) OR (long trinh)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang danning ((ghana china) or (yang jin)) chen zhang hui ((wang zhi) or (long trinh)) ;*.