Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
china dan » china den, china data, china des
kong sara » kong sar
lang tin » lang tim, lang wien
tin tuan » tin tan, dinh tuan, ji tuan
yang jun » pang jun, yang jin, yang judy
yang jui » yang judy, yang di, yang xi
wong sau » wong sam, wong siu, wong shiu

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 tin tuan china dan ((yang jun) OR (yang jui)) ((wong sau) OR (kong sara)) ;~.
• Adding a wildcard symbol may retrieve word variants: lang tin tuan china dan ((yang jun) or (yang jui)) ((wong sau) or (kong sara)) ;*.