Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
housing a » housing _, housing bank
kong saur » kong sar, kong your, wong sau
api test » ai test, i test
kong siu » kong eiu, wong siu, dong sin
ii test » ai test, i test, ii texts

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

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