Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
dali test » davis test, data test, api test
housing a » housing _, housing bank
kong siu » wong siu, kong sar, gong si
kong eiu » tonga eiu
ai test » api test, i test, ii 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: wang yang yang ((dali test) or (ai test)) housing a ((((kong siu) or (kong eiu))) or (dong sin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang ((dali test) OR (ai test)) housing a ((((kong siu) OR (kong eiu))) OR (dong sin)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yang yang ((dali test) or (ai test)) housing a ((((kong siu) or (kong eiu))) or (dong sin)) ;*.