Perhaps you should try some spelling variations:
housing a » housing _, housing bank
kong saur » kong sar, kong siu, kong your
lang yan » wang yan, wang yang, zhang yan
yan yang » yang yang, yao yang, dan yang
api test » i test, ii test
ai test » i test, ii test, ein test
housing » housigng, housindg, housking
sin » sign, sind, skin

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan yang ((api test) or (ai test)) housing a ((kong saur) or (dong sin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan yang ((api test) OR (ai test)) housing a ((kong saur) OR (dong sin)) ;.
• Adding a wildcard symbol may retrieve word variants: lang yan yang ((api test) or (ai test)) housing a ((kong saur) or (dong sin)) ;*.