Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
quoc ban » quoc bao, quoc lan, quoc quan
xuc ban » duc ban, cuc ban, xuat ban
hai cua » thai cua, dai cua, hoi cua
anh hai » lanh hai, manh hai, anh thai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua

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