Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
khoa hoc » hoa hoc
phan dau » phan tu, hang dau
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 ((mach hoc) or (cach hoc)) tap, nghien cuu toan hoc nganh khoa hoc xa hoi ca phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (cach hoc)) tap, nghien cuu toan hoc nganh khoa hoc xa hoi ca phan dau.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (cach hoc)) tap, nghien cuu toan hoc nganh khoa hoc xa hoi ca phan dau*.