Perhaps you should try some spelling variations:
nganh nong » nganh cong
nong thuoc » dong thuoc, long thuoc, khong thuoc
hoc nganh » hoc nhanh
sach doi » sach hoi, sach moi, sach dao
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
thuoc xa » thuoc ma, thuoc va, thuoc la
te sach » toc sach
doi dap » hoi dap, doi dau, do dap
va nhan » van nhan, ca nhan, va nha
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: te sach doi dap, nghien cuu dong hoc nganh nong thuoc xa hoi ((va nhan) OR (va phan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach doi dap, nghien cuu dong hoc nganh nong thuoc xa hoi ((va nhan) OR (va phan)) van".
• Adding a wildcard symbol may retrieve word variants: te sach doi dap, nghien cuu dong hoc nganh nong thuoc xa hoi ((va nhan) OR (va phan)) van*.