Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
quoc bao » quoc oai, hoc bao, quoc va
te sach » toc sach
xuc ban » duc ban, cuc ban, quoc ban
hai cua » thai cua, dai cua, hoi cua
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
mat hoi » mai hoi, sat hoi, luat hoi
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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 ky dang ((mat hoi) OR (mat troi)). hieu va cam ((xuc ban) or (quoc bao)) thanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((mat hoi) OR (mat troi)). hieu va cam ((xuc ban) OR (quoc bao)) thanh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ((mat hoi) OR (mat troi)). hieu va cam ((xuc ban) or (quoc bao)) thanh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((mat hoi) OR (mat troi)). hieu va cam ((xuc ban) or (quoc bao)) thanh hai cua tre*.