Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
nhan tain » nhan dan, nhan tao, han tai
hach hoi » hoach hoi, sach hoi, cach thoi
nhan tai » hang tai, van tai, toan tai
tu hach » tu hanh, tu cach, tu sach
hoi tai » hoc tai, hoi trac
mo hoc » mon hoc, co hoc
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: tu hach hoi tai, nghien cuu mo hoc nganh khong hoc xa hoi va ((nhan tain) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu hach hoi tai, nghien cuu mo hoc nganh khong hoc xa hoi va ((nhan tain) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: tu hach hoi tai, nghien cuu mo hoc nganh khong hoc xa hoi va ((nhan tain) or (nhan tai))*.