Perhaps you should try some spelling variations:
nganh nong » nganh cong
hoc nganh » hoc nhanh
van phong » van dong, hai phong
phong van » phung van, thong van, phong va
sach hoi » sach moi, cach thoi, hoach hoi
sach doi » sach moi, sach dao, sach bai
nong hoc » dong hoc, nang hoc, nong thon
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hai van » thai van, ha van, hai tan
ma hai » ta hai, va hai, xa hai

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 hoi) or (sach doi)) tap, nghien cuu mon hoc nganh nong hoc ma hai van phong van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach hoi) OR (sach doi)) tap, nghien cuu mon hoc nganh nong hoc ma hai van phong van.
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoi) or (sach doi)) tap, nghien cuu mon hoc nganh nong hoc ma hai van phong van*.