Perhaps you should try some spelling variations:
nganh nong » nganh cong
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
nong hoc » dong hoc, nang hoc, nong thon
su sach » so sach, vu sach
hoi dan » hoa dan, hoc dan, hoi dap
phan va » phan van, nhan va, han va
mo hoc » mon hoc, co hoc
hoc xa » hoc ma

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

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