Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va cao » va cac, va co, va dao
va cam » va cham, va cac, 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: te sach ky lang xa hoi. hieu ((va cam) or (va cao)) tuc ((va thanh) OR (ban thanh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu ((va cam) OR (va cao)) tuc ((va thanh) OR (ban thanh)) dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu ((va cam) or (va cao)) tuc ((va thanh) OR (ban thanh)) dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu ((va cam) or (va cao)) tuc ((va thanh) OR (ban thanh)) dai cua tre*.