Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
nghien huu » nghien cuu, nguyen huu, nhiem huu
goc nganh » hoc nganh, hoc nhanh, cac nganh
khung hoc » chung hoc, nhung hoc, thuong hoc
mach hoc » cach hoc, anh hoc, bac hoc
dich hoc » sinh hoc, hinh hoc, tinh hoc
phap han » phap hoan, phap phan, phap nang
huu mot » cuu mot, huy mot, hieu mot
va phap » va phat, ban phap
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: tu ((mach hoc) or (dich hoc)) tai, nghien huu mot goc nganh khung hoc ma hoi va phap han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (dich hoc)) tai, nghien huu mot goc nganh khung hoc ma hoi va phap han.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (dich hoc)) tai, nghien huu mot goc nganh khung hoc ma hoi va phap han*.