Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh, hoc phan
dich hoc » sinh hoc, hinh hoc, kinh hoc
tinh hoc » sinh hoc, tin hoc, hinh hoc
khoa hoc » hoa hoc
toan tai » toan tap, doanh tai, toan ban
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va toan » van toan, bai toan, tap toan

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

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