Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
dich hoc » sinh hoc, hinh hoc, tinh hoc
khoa hoc » hoa hoc
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
te dich » ve dich, tam dich, tap dich
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te dich hoc tap, nghien cuu mon hoc nganh khoa hoc ma hoi va ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te dich hoc tap, nghien cuu mon hoc nganh khoa hoc ma hoi va ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: te dich hoc tap, nghien cuu mon hoc nganh khoa hoc ma hoi va ((toan tai) or (toan ban))*.