Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
trong cuoc » trong cac
nganh cong » nhanh chong, thanh cong
thu trong » thuc trong, thue trong, thuy trong
phan van » pham van, thanh van, luan van
chon cac » cho cac, thong cac, hoc cac
sach hoc » cach hoc, sach hoi, mach hoc
cac phan » cac nhan, cao phan, cap phan
tu sach » thu sach, su sach, te sach
xa chon » lua chon, tap chon, va chong
hoc xa » hoc ma

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien thu trong cuoc ((nganh nong) OR (nganh cong)) hoc xa chon cac phan van~.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien thu trong cuoc ((nganh nong) or (nganh cong)) hoc xa chon cac phan van*.