Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
hoc nganh » hoc nhanh
khung hoc » chung hoc, nhung hoc, thuong hoc
mach hoc » cach hoc, dich hoc, anh hoc
cac nhan » ca nhan, cac nha, cam nhan
nhan tai » hang tai, van tai, toan tai
tu mach » tu cach, tu manh, tu hach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi

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 mon hoc nganh khung hoc ((ma hoi) OR (mai hoi)) cac nhan tai~".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu mon hoc nganh khung hoc ((ma hoi) OR (mai hoi)) cac nhan tai*.