Perhaps you should try some spelling variations:
brain gain » brain drain
dong yang » dong hoang, wang yang, yang yang
wang yong » wang yang, wang hyoung, wang yan
hua brain » human brain, a brain, hua ban
dong bin » dong sin, dong di, dann bin
gain jiu » gain job, yan jiu
jiu cong » li cong

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