Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nganh dong » nganh cong, nhanh dong, nganh nong
hoc nganh » hoc nhanh
phan van » pham van, thanh van, luan van
cau phan » chau phan, cuu phan, cac phan
sach hoi » sach doi, sach moi, cach thoi
dong hoc » dong co, dong luc
cach hoc » cach thuc, cach thoi, dich hoc
hoi cau » hoi chu, hoc cau, hoa cau
mon hoc » toan hoc
huu mon » huu son, hau mon, huu mot
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 ((cach hoc) OR (sach hoi)) tap, nghien huu mon hoc nganh dong hoc xa hoi cau phan van~.
• Adding a wildcard symbol may retrieve word variants: tu ((cach hoc) or (sach hoi)) tap, nghien huu mon hoc nganh dong hoc xa hoi cau phan van*.