Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
chong hoc » chong doc, thong hoc, thuong hoc
chung hoc » trung hoc, dung hoc, hung hoa
sach doi » sach hoi, sach moi, sach dao
su sach » so sach, vu sach
doi tai » hoi tai, dai tai, doi tac
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao
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: su sach doi tai, nghien cuu mon hoc nhanh ((chong hoc) OR (chung hoc)) ma hoi va nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach doi tai, nghien cuu mon hoc nhanh ((chong hoc) OR (chung hoc)) ma hoi va nhan va*".