Perhaps you should try some spelling variations:
ban hanh » ban hang
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cua triet, dua tren
hanh ve » hanh vi, hanh va, hanh kem
xuc ban » duc ban, cuc ban, quoc ban
cao hoa » cao hoat, cao khoa, cau hoa
ty nang » ky nang, ty xang, ty hang
cuu tre » cau tren, cau treo
va cam » va cham, va cao, va cai

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 ty nang cao hoa. lieu ((va cam) OR (va cac)) xuc ban hanh ve ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang cao hoa. lieu ((va cam) OR (va cac)) xuc ban hanh ve ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang cao hoa. lieu ((va cam) OR (va cac)) xuc ban hanh ve ((cua tre) or (cuu tre))*".