Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
china chen » china shen, china china, china chang
lang yan » wang yan, wang yang, zhang yan
yan than » van thanh, yan zhang, yan clan
yang jui » yang judy, yang xi, yang yi
yang jin » yang jie, ying jin, shang jin
yang jun » pang jun, yang judy, yang fan
wong siu » wong shiu, kong siu, wong sau

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: lang yan than china chen ((((yang jui) OR (yang di))) OR (((yang jin) OR (yang jun)))) wong siu ;~.
• Adding a wildcard symbol may retrieve word variants: lang yan than china chen ((((yang jui) or (yang di))) or (((yang jin) or (yang jun)))) wong siu ;*.