Perhaps you should try some spelling variations:
dang mat » dang vat, dang mau, dung mat
quoc bao » quoc oai, hoc bao, quoc va
te sach » toc sach
duc ban » duc tan, duc van, dua ban
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
mat hoi » mai hoi, sat hoi, mat troi
ky dang » ky nang, ky danh
va cam » va cham, va cac, va cao
cua te » cua tu

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