Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
thuat mach » thuat sach, thuat tach, thuyet mach
goc nganh » hoc nganh, hoc nhanh, cac nganh
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, anh hoc
thuoc ma » hoc ma, duoc ma
phan van » pham van, luan van, tran van
cuu mot » cua mot, cuu mo, huu mot
hoi van » hoi va, hoi dan, hai van
ma hoi » mai hoi, xa hoi, ma hoa

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 cuu mot goc nganh khong thuoc ma 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 cuu mot goc nganh khong thuoc ma hoi van ((phan van) OR (thanh van)).
• Adding a wildcard symbol may retrieve word variants: thuat mach hoc tap, nghien cuu mot goc nganh khong thuoc ma hoi van ((phan van) or (thanh van))*.