Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
cuoc nganh » hoc nganh, cac nganh, chuc nganh
cong cuoc » song cuoc, trong cuoc, luong cuoc
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, sach hoi, mach hoc
nong hoc » dong hoc, nong thon, duong hoc
nang hoc » nang doc, nang luc, dong hoc
ca thanh » cua thanh, cac thanh, va thanh
tu sach » thu sach, su sach, te sach
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 cong cuoc nganh ((nong hoc) or (nang hoc)) xa hoi ca thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien thu cong cuoc nganh ((nong hoc) OR (nang hoc)) xa hoi ca thanh van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien thu cong cuoc nganh ((nong hoc) or (nang hoc)) xa hoi ca thanh van*.