Perhaps you should try some spelling variations:
hua brain » human brain, hua ban, our brain
dong skin » dong sin, dong bin, dof skin
dann bin » dong bin
jiu kong » jiu cong, liu kung, liu yong
dong di » dong sin
a brain » _ brain
yan jiu » yang jie, yang jin, pang jiu
sar » sara, star, saur

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: ((((dann bin) OR (dong di))) OR (dong skin)) ya ((hua brain) OR (a brain)) yan jiu kong sar ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dann bin) or (dong di))) or (dong skin)) ya ((hua brain) OR (a brain)) yan jiu kong sar ;~".
• Adding a wildcard symbol may retrieve word variants: ((((dann bin) or (dong di))) or (dong skin)) ya ((hua brain) OR (a brain)) yan jiu kong sar ;*.