Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
dong hong » dong hoang, hong hong, kong hong
vu brain » our brain, _ brain, a brain
yang jin » yang jie, yang jun, ying jin
yong shu » cong shu, tong shui, wong shiu
yan jiu » yang jie, pang jiu

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) OR (yang yang))) OR (dong hong)) vu brain ((yan jiu) OR (yang jin)) yong shu ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((((dong yang) or (yang yang))) or (dong hong)) vu brain ((yan jiu) or (yang jin)) yong shu ;*.