Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
ban lanh » ban hanh, ban linh, ban anh
lanh dai » lanh dao, lanh hai, lang dai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban

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. ((hieu ve) OR (hieu van)) cac duc ban lanh dai cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xay hoi. ((hieu ve) or (hieu van)) cac duc ban lanh dai cua triet*.