Perhaps you should try some spelling variations:
thanh hoa » thanh pho
thu sach » tu sach, thuat sach, thuoc sach
hanh lam » thanh lap, hanh kem, hanh va
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
va cam » va cham, va cac, va cai
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: thu sach ty xang xa hoi. hieu ((va cam) OR (va cao)) duc va ((thanh hoa) or (hanh lam)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty xang xa hoi. hieu ((va cam) OR (va cao)) duc va ((thanh hoa) OR (hanh lam)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty xang xa hoi. hieu ((va cam) OR (va cao)) duc va ((thanh hoa) or (hanh lam)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty xang xa hoi. hieu ((va cam) OR (va cao)) duc va ((thanh hoa) or (hanh lam)) cua tre*.