Perhaps you should try some spelling variations:
wang china » hang china, wang china's, kong china
china yang » china ying, china wang, china chang
yulu chen » yu chen
chan ming » kian ming, chan eng, chan fong
yu cheng » yu chen, _ cheng
chung h » chung _, chung hee, chung chi
chun h » chun _, chun i, chun hui

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 china yang ((yulu chen) OR (yu cheng)) chan ming ((chun h) OR (chung h)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang china yang ((yulu chen) or (yu cheng)) chan ming ((chun h) or (chung h)) ;*.