Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
thu sach » thuat sach, thuoc sach, thu hoach
hieu ve » hieu va, hieu van
tu sach » su sach, te sach, tu cach
ban bo » can bo, ban do, ban co
di cua » dai cua, doi cua, de cua
ve ban » te ban, va ban, ve 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: ((thu sach) OR (tu sach)) ky nang x hoi. hieu ve ban bo ((van hanh) OR (ban hanh)) di cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ky nang x hoi. hieu ve ban bo ((van hanh) or (ban hanh)) di cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) ky nang x hoi. hieu ve ban bo ((van hanh) or (ban hanh)) di cua triet*.