Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
khoa hoc » hoa hoc
tinh van » trinh van, tinh va, tich van
dinh van » sinh vat
su mach » su sach
huu van » cuu van, huu han, luu van
van hoc » van hoa
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su mach hoc tap, nghien huu van hoc nganh khoa hoc xa hoi va ((tinh van) OR (dinh van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su mach hoc tap, nghien huu van hoc nganh khoa hoc xa hoi va ((tinh van) OR (dinh van))".
• Adding a wildcard symbol may retrieve word variants: su mach hoc tap, nghien huu van hoc nganh khoa hoc xa hoi va ((tinh van) OR (dinh van))*.