Perhaps you should try some spelling variations:
cain china » can china, china china, spain china
doing sin » dong sin, doing un, doing von
china ren » china loren, china real, china reza
kong john » king john, longo john, wrong john
wong john » wrong john, longo john, young john
wong shiu » wong siu, song shin, wong sau
sin cain » sin fin, tin can

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: doing sin cain china ren ((kong john) OR (wong john)) ((wong shiu) OR (cong shu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doing sin cain china ren ((kong john) OR (wong john)) ((wong shiu) or (cong shu)) ;~".
• Adding a wildcard symbol may retrieve word variants: doing sin cain china ren ((kong john) OR (wong john)) ((wong shiu) or (cong shu)) ;*.