Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
cuc ban » cac ban, cuu ban, duc ban
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty lang xa hoi. ((hieu ve) or (hieu va)) cam ((cuc ban) or (cua ban)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty lang xa hoi. ((hieu ve) OR (hieu va)) cam ((cuc ban) OR (cua ban)) hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty lang xa hoi. ((hieu ve) or (hieu va)) cam ((cuc ban) or (cua ban)) hanh vai cua tre*.