Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
lang xa » lang ha, dang xay, lang van
cuc ban » cua ban, cuu ban, duc ban
cac ban » cac dan, cac van, can ban
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang

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 y lang xa hoi. ((hieu van) OR (lieu va)) cam ((cuc ban) or (cac ban)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang xa hoi. ((hieu van) OR (lieu va)) cam ((cuc ban) OR (cac ban)) hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang xa hoi. ((hieu van) OR (lieu va)) cam ((cuc ban) or (cac ban)) hanh vai cua tre*".