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

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