Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh di » thanh doi, thanh de, thanh do
so sach » so sanh, bo sach, co sach
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua
va co » vo co

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 y ((nang x) or (lang xa)) hoi. hieu ((va cam) or (va co)) xuc ban thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang x) OR (lang xa)) hoi. hieu ((va cam) OR (va co)) xuc ban thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang x) or (lang xa)) hoi. hieu ((va cam) or (va co)) xuc ban thanh di cua tre*.