Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
tu mach » tu cach, tu manh, tu hach
hoc xa » hoc ma

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: tu mach hoc tap, nghien thu cong hoc nganh khoa hoc xa hoi va ((gian lang) OR (gian dan))~.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien thu cong hoc nganh khoa hoc xa hoi va ((gian lang) or (gian dan))*.