Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » tay hoi, cay phoi, gay thoi
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
tuan » quan, tran, luan

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 ky dang ((xay hoi) OR (xa hoi)). hieu va cac du ((van ban) OR (tuan anh)) vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang ((xay hoi) OR (xa hoi)). hieu va cac du ((van ban) or (tuan anh)) vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang ((xay hoi) OR (xa hoi)). hieu va cac du ((van ban) or (tuan anh)) vi cua triet*.