Perhaps you should try some spelling variations:
nhanh dong » hanh dong, nhanh chong, anh dong
hoc nhanh » hoc nganh, hoc phan
dong duoc » dong quoc, dong duong, trong duoc
sach moi » sach doi, sach hoi, bach mai
van phan » van phong, van thanh, luan phan
tu sach » thu sach, su sach, te sach
moi tap » moi tai, toi tap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
duoc ma » duoc lam
va phan » va phat, va phap, hoa 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: tu sach moi tap, nghien cuu mon hoc nhanh dong duoc ma hoi ((va phan) or (van phan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach moi tap, nghien cuu mon hoc nhanh dong duoc ma hoi ((va phan) OR (van phan)) van.
• Adding a wildcard symbol may retrieve word variants: tu sach moi tap, nghien cuu mon hoc nhanh dong duoc ma hoi ((va phan) or (van phan)) van*.