Perhaps you should try some spelling variations:
china rent » china ren, china recent, china real
simon can » simon alan, simon c, simon c.y
wong john » wrong john, kong john, longo john
john wong » john song, john bonn
wong siu » wong shiu, kong siu, wong sau
sin can » sin cain, tin can
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 can) or (simon can)) china rent wong john wong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong ((sin can) OR (simon can)) china rent wong john wong siu ;.
• Adding a wildcard symbol may retrieve word variants: dong ((sin can) or (simon can)) china rent wong john wong siu ;*.