Perhaps you should try some spelling variations:
dong hoang » hong hong
yang liang » wang liang, yan liang, yang yang
wang dong » wang yong, wang hong, wang yang
zhong zhi » zhang zhi, hong ghi, zhong tai
hoang yi » hoang vu, yang yi, hoang sy
wang lin » wang li, wang qin, yang lin
hong yu » wong yue

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 hoang yi ((yang liang) OR (wang lin)) yi ((zhong zhi) OR (hong yu)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang dong hoang yi ((yang liang) or (wang lin)) yi ((zhong zhi) or (hong yu)) ;*.