Perhaps you should try some spelling variations:
wang dong » wang yong, wang hong, wang yang
liang zhi » wang zhi, liang li
yang zhi » wang zhi, yang di, yang jui
yang jun » yang jui, pang jun, yang jin
wong sau » kong sar
yan jiu » yang jin
yang xi » yang di, yang yi, yang jui

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang dong ((yang zhi) OR (liang zhi)) test ((yan jiu) OR (((yang jun) OR (yang xi)))) wong sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang dong ((yang zhi) OR (liang zhi)) test ((yan jiu) or (((yang jun) or (yang xi)))) wong sau ;~".
• Adding a wildcard symbol may retrieve word variants: wang dong ((yang zhi) OR (liang zhi)) test ((yan jiu) or (((yang jun) or (yang xi)))) wong sau ;*.