Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lang van » dang van, tang van, hoang van
te sach » toc sach
cac ban » cac dan, cac van, can ban
cuc ban » cua ban, cuu ban, duc ban
van cam » van nam, van lam, van cau
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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