Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
thuoc xa » thuoc va, thuoc la, thuoc tai
thuoc ma » hoc ma, duoc ma
nhan van » nhan dan, nhan va, phan van
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach hoc tap, nghien cuu mon hoc nganh khong ((thuoc xa) OR (thuoc ma)) hoi va nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoc tap, nghien cuu mon hoc nganh khong ((thuoc xa) OR (thuoc ma)) hoi va nhan van".
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghien cuu mon hoc nganh khong ((thuoc xa) OR (thuoc ma)) hoi va nhan van*.