Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
hanh di » hanh de, hang di, danh di
tu sach » thu sach, su sach, te sach
ve ban » te ban, ve bao, vu ban
bo van » vo van, so van, do van
va ban » van ban, va bai, va bao
x hoi » xa hoi, o hoi, x ho

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: tu sach ky nang x hoi. hieu ((ve ban) OR (va ban)) bo van ((hanh di) OR (hanh vi)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((ve ban) OR (va ban)) bo van ((hanh di) or (hanh vi)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ((ve ban) OR (va ban)) bo van ((hanh di) or (hanh vi)) cua triet*.