Perhaps you should try some spelling variations:
nhanh chung » nhanh chuong, nhanh chong, nhanh hung
luc nhanh » luc nhan, luc nganh, luc canh
chung hoc » trung hoc, dung hoc, hung hoa
sach bai » sach dao, cac bai, sach xa
sach moi » sach doi, sach hoi, bach mai
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
phan tan » phan van, phan tap, phan lan
va phan » van phan, va phat, va phap
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 bai) or (sach moi)) tap, nghien cuu dong luc nhanh chung hoc ma hoi va phan tan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach bai) OR (sach moi)) tap, nghien cuu dong luc nhanh chung hoc ma hoi va phan tan.
• Adding a wildcard symbol may retrieve word variants: tu ((sach bai) or (sach moi)) tap, nghien cuu dong luc nhanh chung hoc ma hoi va phan tan*.