Perhaps you should try some spelling variations:
dong hoang » hong hong
dong yang » wang yang, yang yang, dan yang
rene chen » jane chen, rene ten
chen ping » chen rong, chen yang, chen wang
ping cong » ping pong, minh cong, ping wang
yang zhi » wang zhi, yan zhi, liang zhi
zhi rene » i rene, ii rene, iii rene

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong yang) or (dong hoang)) yang zhi rene chen ping cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (dong hoang)) yang zhi rene chen ping cong shu ;.
• Adding a wildcard symbol may retrieve word variants: ((dong yang) or (dong hoang)) yang zhi rene chen ping cong shu ;*.