Perhaps you should try some spelling variations:
nganh nong » nganh cong
hoc nganh » hoc nhanh
sach doi » sach hoi, sach dao, sach bai
sach moi » sach hoi, bach mai, sach bai
nong hoc » dong hoc, nang hoc, nong thon
hoc gian » hoc giao, hoc giai, hoc gia
gian hoi » gian thai, gian ha, gian o
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao

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

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