Perhaps you should try some spelling variations:
cao housing » co housing, a housing, so housing
census aid » census a, census based
liang dal » liang dan, liang tan
zhong tai » hong hai, zhong zhi
dal dong » dal yong, dal pont
dong cao » dong xiao, dan cao, dong nan
hong ng » hong kong, hong jong, hong hong

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: liang dal dong cao housing census aid ((((zhong tai) OR (hong tan))) OR (hong ng)) ;~.
• Adding a wildcard symbol may retrieve word variants: liang dal dong cao housing census aid ((((zhong tai) or (hong tan))) or (hong ng)) ;*.