Perhaps you should try some spelling variations:
dong simon » wong simon, dong sin, von simon
china rent » china recent, china real, china reza
longo john » kong john
simon can » simon alan, simon c, simon c.y
china ren » china loren, china real, china reza
wong john » wrong john, kong john, young john

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

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