Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
nganh nong » nganh cong
sach hoc » cach hoc, sach hoi, mach hoc
tu sach » thu sach, su sach, te sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va luan » vay luan, van luan, va quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghien cuu mon hoc ((nganh khoa) or (nganh nong)) hoc mai hoi va luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu mon hoc ((nganh khoa) OR (nganh nong)) hoc mai hoi va luan van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu mon hoc ((nganh khoa) or (nganh nong)) hoc mai hoi va luan van*.