Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
cao hoi » cau hoi, cao hoc, tao hoi
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
hoi cua » hoi chuc
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
co hoi » co hoc, co loi
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ((cao hoi) OR (co hoi)). hieu va cam xuc ((van hanh) or (va danh)) hoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ((cao hoi) OR (co hoi)). hieu va cam xuc ((van hanh) OR (va danh)) hoi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang ((cao hoi) OR (co hoi)). hieu va cam xuc ((van hanh) or (va danh)) hoi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ((cao hoi) OR (co hoi)). hieu va cam xuc ((van hanh) or (va danh)) hoi cua triet*.