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