Perhaps you should try some spelling variations:
nganh chung » nhanh chuong, nganh cong, nhanh chong
hoc nganh » hoc nhanh
chung hoc » trung hoc, dung hoc, hung hoa
sach hoc » cach hoc, sach hoi, mach hoc
so sach » so sanh, bo sach, co sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, va phan, va nha
ma hoi » mai hoi, xa hoi, ma hoa

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: "so sach hoc tap, nghien cuu mon hoc nganh chung hoc ma hoi ((va nhan) OR (ca nhan)) van~".
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu mon hoc nganh chung hoc ma hoi ((va nhan) OR (ca nhan)) van*.