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
toc sach » hoc sach, doc sach, thuoc sach
nhan dan » phan dau, gian dan, nhan tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
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: ((te sach) OR (toc sach)) hoc tap, nghien cuu mon hoc nganh khong hoc ma hoi va nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) hoc tap, nghien cuu mon hoc nganh khong hoc ma hoi va nhan dan".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) hoc tap, nghien cuu mon hoc nganh khong hoc ma hoi va nhan dan*.