Perhaps you should try some spelling variations:
nganh nong » nganh cong
luc nganh » luc ngan, chuc nganh, luat nganh
sach hoi » sach doi, sach moi, cach thoi
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
nong hoc » dong hoc, nang hoc, nong thon
van phan » van phong, van thanh, luan phan
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
va phan » va phat, va phap, hoa phan
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: tu sach hoi tap, nghien cuu dong luc nganh nong hoc xa hoi ((va phan) or (van phan)) tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoi tap, nghien cuu dong luc nganh nong hoc xa hoi ((va phan) OR (van phan)) tao.
• Adding a wildcard symbol may retrieve word variants: tu sach hoi tap, nghien cuu dong luc nganh nong hoc xa hoi ((va phan) or (van phan)) tao*.