Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
hoc nganh » hoc nhanh
thuoc tai » nuoc tai, hoc tai, thuoc ma
sach hoc » cach hoc, sach hoi, mach hoc
nhan van » nhan dan, nhan va, nha van
phan van » pham van, thanh van, luan van
so sach » so sanh, bo sach, co sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
tai hoi » tai khoi, dai hoi, tai hai

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 hoc tap, nghien cuu mon hoc nganh khong thuoc tai hoi va ((nhan van) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach hoc tap, nghien cuu mon hoc nganh khong thuoc tai hoi va ((nhan van) OR (phan van)).
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu mon hoc nganh khong thuoc tai hoi va ((nhan van) or (phan van))*.