Perhaps you should try some spelling variations:
quoc ban » quoc bao, quoc lan, quoc quan
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
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: tu sach y lang xa hoi. hieu tu cham ((((xuc van) or (quoc ban))) or (duc tan)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. hieu tu cham ((((xuc van) OR (quoc ban))) OR (duc tan)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y lang xa hoi. hieu tu cham ((((xuc van) or (quoc ban))) or (duc tan)) hanh vi cua tre*.