Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cuu 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 cuu cong hoc nganh khoa hoc xa hoi va ((gian lang) OR (gian dan))*.