Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
thu sach » tu sach, thuat sach, thuoc sach
khoa hoc » hoa hoc
phat han » phat hanh, phap han, phat ha
hoi tap » hoi dap, hoc tap, hai tap
hoi tai » hoc tai, hoi trac
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc dai » hoc dan
dai hoi » dai hoc, dai hai, dai moi

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: thu sach ((hoi tap) OR (hoi tai)), nghien cuu mon hoc nganh khoa hoc dai hoi va phat han~.
• Adding a wildcard symbol may retrieve word variants: thu sach ((hoi tap) or (hoi tai)), nghien cuu mon hoc nganh khoa hoc dai hoi va phat han*.