Perhaps you should try some spelling variations:
goc nganh » hoc nganh, hoc nhanh, cac nganh
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoc » cach hoc, sach hoi, mach hoc
su sach » so sach, vu sach
cuu mot » cua mot, cuu mo, huu mot
va phan » van phan, va phap, hoa phan
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoc tap, nghien cuu mot goc nganh hoa hoc xa hoi ((va phan) or (va phat)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien cuu mot goc nganh hoa hoc xa hoi ((va phan) OR (va phat)) van.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu mot goc nganh hoa hoc xa hoi ((va phan) or (va phat)) van*.