Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
thuoc sach » hoc sach, nuoc sach, thuat sach
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
sach hoc » cach hoc, sach hoi, mach hoc
phat van » pham van, phan van, phap van
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ma hoi » mai hoi, ma hoa, me hoi

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: thuoc sach hoc tap, nghien cuu mon hoc nganh khong hoc ((ma hoi) OR (xa hoi)) va phat van~.
• Adding a wildcard symbol may retrieve word variants: thuoc sach hoc tap, nghien cuu mon hoc nganh khong hoc ((ma hoi) or (xa hoi)) va phat van*.