Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghe thu
cuoc nganh » hoc nganh, cac nganh, chuc nganh
nganh nong » nganh cong
cong cuoc » song cuoc, trong cuoc, luong cuoc
sach hoc » cach hoc, sach hoi, mach hoc
nong hoc » dong hoc, nang hoc, nong thon
phan van » pham van, thanh van, luan van
tu sach » thu sach, su sach, te sach
ca phan » cac phan, cao phan, cap phan
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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 hoc tap, ((nghien thu) OR (nghien cuu)) cong cuoc nganh nong hoc xa hoi ca phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, ((nghien thu) OR (nghien cuu)) cong cuoc nganh nong hoc xa hoi ca phan van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, ((nghien thu) OR (nghien cuu)) cong cuoc nganh nong hoc xa hoi ca phan van*.