Perhaps you should try some spelling variations:
thuat mach » thuat sach, thuat tach, thuyet mach
nghien huu » nghien cuu, nguyen huu, nhiem huu
goc nganh » hoc nganh, hoc nhanh, cac nganh
nganh hoa » thanh hoa, khanh hoa, danh hoa
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, anh hoc
phan van » pham van, luan van, tran van
huu mot » cuu mot, huy mot, hieu mot
hoi van » hoi va, hoi dan, hai van
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: thuat mach hoc tap, nghien huu mot goc nganh hoa hoc xa hoi van ((phan van) or (thanh van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat mach hoc tap, nghien huu mot goc nganh hoa hoc xa hoi van ((phan van) OR (thanh van)).
• Adding a wildcard symbol may retrieve word variants: thuat mach hoc tap, nghien huu mot goc nganh hoa hoc xa hoi van ((phan van) or (thanh van))*.