Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
danh nhan » doanh nhan, thanh nhan, benh nhan
mach hoc » cach hoc, dich hoc, anh hoc
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
han danh » van danh, phan dang, nhan dang
tu mach » tu cach, tu manh, tu hach
hoc mai » hoc ma, hoc dai, hoc may
hoc bai » hoc dai, hoc giai
nhan va » nhan tai, nhan dan, nhan tao

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 tap, nghien cuu toan hoc nganh khoa ((hoc mai) or (hoc bai)) han danh nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu toan hoc nganh khoa ((hoc mai) OR (hoc bai)) han danh nhan va.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu toan hoc nganh khoa ((hoc mai) or (hoc bai)) han danh nhan va*.