Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoc » cach hoc, sach hoi, mach hoc
phan dau » phan tu, hang dau
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 ((cua ban) or (cua cong)) hoc nganh hoa hoc xa hoi ca phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien ((cua ban) OR (cua cong)) hoc nganh hoa hoc xa hoi ca phan dau.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien ((cua ban) or (cua cong)) hoc nganh hoa hoc xa hoi ca phan dau*.