Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
sach doi » sach hoi, sach moi, sach dao
cua dung » cua dang, cua dong, qua dung
so sach » so sanh, bo sach, co sach
doi tac » dong tac
cuu mon » cuu mo, cuu mot, cuu cong
hoc anh » hoc nhanh, ngoc anh, hoc sinh
hoi cua » hoi chuc
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach doi tac, nghien cuu mon ((hoc nganh) or (hoc anh)) hoa hoc ma hoi cua dung tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach doi tac, nghien cuu mon ((hoc nganh) OR (hoc anh)) hoa hoc ma hoi cua dung tai.
• Adding a wildcard symbol may retrieve word variants: so sach doi tac, nghien cuu mon ((hoc nganh) or (hoc anh)) hoa hoc ma hoi cua dung tai*.