Perhaps you should try some spelling variations:
lanh hai » manh hai, thanh hai, lang chai
sach thu » sach thue, sach thieu, sach tham
hang xay » dang xay, hang hay, thong xay
ban lanh » ban hanh, ban linh, ban anh
quoc ban » quoc bao, quoc lan, quoc quan
hai cua » thai cua, dai cua, hoi cua
van cam » van lam, van cau, van dam
sach ty » sach y, sach tu, xach tay
xay hoi » xa hoi, tay hoi, cay phoi
cua tre » cua te, cuu tre, cua triet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach thu)) hang xay hoi. hieu ((van cam) OR (van nam)) quoc ban lanh hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach thu)) hang xay hoi. hieu ((van cam) or (van nam)) quoc ban lanh hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach thu)) hang xay hoi. hieu ((van cam) or (van nam)) quoc ban lanh hai cua tre*.