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
manh hoc » anh hoc, manh ho, manh hon
mai choi » bai choi, mai khoi, ai choi
nhan dan » phan dau, gian dan, nhan tai
tu manh » tu minh, tu hanh, vu manh
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc mai » hoc ma, hoc dai, hoc bai
choi va » hoi va, chai va, cho va
nha van » nha lanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu manh hoc tap, nghien cuu mon hoc nganh khong hoc mai choi va ((nha van) or (nhan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu manh hoc tap, nghien cuu mon hoc nganh khong hoc mai choi va ((nha van) OR (nhan dan)).
• Adding a wildcard symbol may retrieve word variants: tu manh hoc tap, nghien cuu mon hoc nganh khong hoc mai choi va ((nha van) or (nhan dan))*.