Perhaps you should try some spelling variations:
wang dong » wang yong, wang yang, wang jing
wang hong » wang yong, wang hyoung, wang lihong
yang jie » yang jin, yang di, yang jui
wong sau » wong sam, wong siu, wong shiu
ai test » api test, i test, ein test
ii test » i test, api test, ii texts
yan jiu » yang jin, pang jiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang dong) or (wang hong)) yang ((ai test) OR (ii test)) ((yan jiu) or (yang jie)) wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang dong) OR (wang hong)) yang ((ai test) OR (ii test)) ((yan jiu) OR (yang jie)) wong sau ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang dong) or (wang hong)) yang ((ai test) OR (ii test)) ((yan jiu) or (yang jie)) wong sau ;".
• Adding a wildcard symbol may retrieve word variants: ((wang dong) or (wang hong)) yang ((ai test) OR (ii test)) ((yan jiu) or (yang jie)) wong sau ;*.