Perhaps you should try some spelling variations:
nganh khong » nhanh chong, nganh nong, nganh khoa
nganh cong » nhanh chong, thanh cong
sach hoc » cach hoc, sach hoi, mach hoc
thuoc va » thuc va, thuoc ma, thuong va
nhan van » nhan dan, nhan va, phan van
so sach » so sanh, bo sach, co sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
va hoi » xa hoi, va hoc, va 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 hoc tap, nghien cuu mon hoc ((nganh khong) OR (nganh cong)) thuoc va hoi va nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach hoc tap, nghien cuu mon hoc ((nganh khong) OR (nganh cong)) thuoc va hoi va nhan van".
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu mon hoc ((nganh khong) OR (nganh cong)) thuoc va hoi va nhan van*.