Perhaps you should try some spelling variations:
nhanh trong » hanh trong, nhan trong, chinh trong
sach duoc » sach nuoc, sach dao, sach dung
luc nhanh » luc nhan, luc nganh, luc canh
trong hoc » truong hoc, tuong hoc, thong hoc
hoc thanh » hoc nhanh, hoan thanh, hoc phan
sach hoi » sach doi, sach moi, cach thoi
cuu dong » cuu cong, cuu tong, cuu long
dong luc » nang luc
san dau » van dau, san diu, ban dau
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa 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 duoc) or (sach hoi)) tap, nghien cuu dong luc nhanh trong hoc xa hoc thanh san dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach duoc) OR (sach hoi)) tap, nghien cuu dong luc nhanh trong hoc xa hoc thanh san dau.
• Adding a wildcard symbol may retrieve word variants: tu ((sach duoc) or (sach hoi)) tap, nghien cuu dong luc nhanh trong hoc xa hoc thanh san dau*.