Perhaps you should try some spelling variations:
china ren » china loren, china real, china reza
wong john » wrong john, kong john, longo john
wong shiu » wong siu, song shin, wong sau
sin cain » tin can
ren wong » ren weng
sin fin » sine fine, pin fins, skin fig
dong » doing, long, done

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: dong ((sin cain) or (sin fin)) china ren wong john ((wong shiu) OR (cong shu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((sin cain) OR (sin fin)) china ren wong john ((wong shiu) OR (cong shu)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong ((sin cain) or (sin fin)) china ren wong john ((wong shiu) OR (cong shu)) ;".
• Adding a wildcard symbol may retrieve word variants: dong ((sin cain) or (sin fin)) china ren wong john ((wong shiu) OR (cong shu)) ;*.