Perhaps you should try some spelling variations:
housing costs » housing census
yan liang » yang liang, wang liang, you liang
a housing » 4 housing
kong siu » kong eiu, wong siu, kong sar
wei a » wei ta, wei ya, bei a
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 ((yan liang) OR (wang yan)) wei a housing costs ((kong siu) OR (dong sin)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan liang) or (wang yan)) wei a housing costs ((kong siu) OR (dong sin)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan liang) or (wang yan)) wei a housing costs ((kong siu) OR (dong sin)) ;*.