Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep bac
nghiep cay » nghiep chan, nghiep va, nghiep cua
bac thanh » ban thanh, cac thanh, tai thanh
thu benh » tru benh, thu binh, chua benh
benh hoc » sinh hoc
cong bac » cong tac, dong bac, cong cac
cong coc » cong cuoc, cong cac, cong co
van luan » van quan, van tuan, von luan
hoi van » hoi va, hoi dan, hai van
coc xa » hoc xa, cac xa, coc ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu benh hoc tap, ((nghien cac) or (nghiep cay)) cong bac thanh cong coc xa hoi van luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu benh hoc tap, ((nghien cac) OR (nghiep cay)) cong bac thanh cong coc xa hoi van luan van.
• Adding a wildcard symbol may retrieve word variants: thu benh hoc tap, ((nghien cac) or (nghiep cay)) cong bac thanh cong coc xa hoi van luan van*.