Perhaps you should try some spelling variations:
wang david » deng david, long david, ng david
wang yong » wang yang, wang hyoung, wang yan
yong wang » hong wang, yong phang, ping wang
2 housing » 4 housing, a housing, 3 housing
kong saur » kong sar, kong siu, kong your
using » usigng, usindg, usking
housing » housigng, housindg, housking
sin » sign, sind, skin

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: wang yong wang david ((test (using OR usigng)) OR (2 housing)) a ((kong saur) OR (dong sin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong wang david ((test (using OR usigng)) or (2 housing)) a ((kong saur) or (dong sin)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yong wang david ((test (using OR usigng)) or (2 housing)) a ((kong saur) or (dong sin)) ;*.