Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
quoc bao » quoc oai, hoc bao, quoc va
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
anh xay » manh xay, anh hay, nganh xay
bao anh » bao hanh, cao anh, tao anh
anh hai » lanh hai, manh hai, anh thai
hai cua » thai cua, dai cua, hoi cua
ve bao » te bao, va bao
ve cao » va cao, ve cac, ve co

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky ((anh xay) or (dang xay)) hoi. hieu ((ve cao) OR (ve bao)) quoc bao anh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((anh xay) OR (dang xay)) hoi. hieu ((ve cao) OR (ve bao)) quoc bao anh hai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((anh xay) or (dang xay)) hoi. hieu ((ve cao) OR (ve bao)) quoc bao anh hai cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((anh xay) or (dang xay)) hoi. hieu ((ve cao) OR (ve bao)) quoc bao anh hai cua triet*.