Perhaps you should try some spelling variations:
sach bao » sach dao, sach bai, sach bac
bao nano » tao nano, bao cao, cao nang
nano bac » tao bac, bang bac, dan bac
van hanh » van thanh, ban hanh, van anh
so sach » so sanh, bo sach, co sach
bac hoi » bac ho, bac hoc, sach hoi
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
hanh va » hang va, hanh vi
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
ve cam » ve cham, ve cac, va cam

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 bao nano bac hoi. hieu ve cam xuc van hanh va ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach bao nano bac hoi. hieu ve cam xuc van hanh va ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: so sach bao nano bac hoi. hieu ve cam xuc van hanh va ((cua tre) or (cuu tre))*.