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
cam nhan » ca nhan, cam chan, cam nang
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu mon hoc nganh khung hoc ((ma hoi) OR (mai hoi)) cam 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)) cam nhan tai*.