Perhaps you should try some spelling variations:
nganh nong » nganh cong
hoc nganh » hoc nhanh
thuoc ma » hoc ma, duoc ma
thuoc la » thuoc va, thuoc tai, thuoc ban
phan van » pham van, thanh van, luan van
cac hoc » cach hoc, cac hop, bac hoc
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va phan » van phan, va phat, va phap

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

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