Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach thi » sach thu, sach thieu, sach tham
thanh ca » thanh cha, thanh cac, thanh ha
sach tai » sach bai, sach tham, sach dao
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
va hoa » van hoa, va hoc, ma hoa
ca cua » co cua
ve cam » ve cham, ve cac, ve cai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach thi) OR (sach tai)) hang va hoa. hieu ((ve cam) or (va cam)) xuc ban thanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach thi) OR (sach tai)) hang va hoa. hieu ((ve cam) OR (va cam)) xuc ban thanh ca cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach thi) OR (sach tai)) hang va hoa. hieu ((ve cam) or (va cam)) xuc ban thanh ca cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach thi) OR (sach tai)) hang va hoa. hieu ((ve cam) or (va cam)) xuc ban thanh ca cua tre*.