Perhaps you should try some spelling variations:
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
duc ban » duc tan, duc van, dua ban
cuu tre » cau tren, cau treo
xuc ban » cuc ban, quoc ban, xuat ban
cao hoa » cao hoat, cao khoa, cau hoa
ty nang » ky nang, ty xang, ty hang
va cao » va cac, va co, va dao

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 cao ((xuc ban) OR (duc 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 cao ((xuc ban) OR (duc 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 cao ((xuc ban) OR (duc ban)) hanh ve ((cua tre) or (cuu tre))*".