Perhaps you should try some spelling variations:
dali test » davis test, data test, api test
housing a » housing _, housing bank
dong sign » dong sin, among sign, dong bin
yan yang » yang yang, yao yang, dan yang
kong siu » kong eiu, wong siu, dong sin
ai test » api test, i test, ii test
wang » wing, wan, lang

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

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