Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
hoc nhanh » hoc nganh, hoc phan
chong hoc » chung hoc, chong doc, thong hoc
toan tai » toan tap, doanh tai, toan ban
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
doi tap » doi tac, doi dap, doi tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ma khoa » may khoa, mai khoa, da khoa
khoa xa » hoa xa, khoa ma, khoa x
xa toan » va toan, xa tan, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (bo sach)) doi tap, nghien cuu mon hoc nhanh chong hoc ma khoa xa toan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) doi tap, nghien cuu mon hoc nhanh chong hoc ma khoa xa toan tai*.