Perhaps you should try some spelling variations:
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
wang yong » wang hyoung, wang yan, wang shiyong
hua brain » human brain, a brain
brain yan » brain gain
dong bin » dong sin, dong di
yan jiu » yang jin
cong » congo, long, hong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((((yang yang) or (wang yang))) or (wang yong))) or (dong bin)) ya hua brain yan jiu cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((((yang yang) OR (wang yang))) OR (wang yong))) OR (dong bin)) ya hua brain yan jiu cong shu ;.
• Adding a wildcard symbol may retrieve word variants: ((((((yang yang) or (wang yang))) or (wang yong))) or (dong bin)) ya hua brain yan jiu cong shu ;*.