Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
va kinh » va tinh, qua kinh
va minh » van minh, vua minh, va tinh
hieu va » lieu va, hieu qua
hoc hoi » hoc khoi, hoc hoa, hoc noi
hoi hoi » hoi hoc, hoi doi, doi hoi
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
su sac » su sach, su cac, su xac
te va » tu va

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 sac ky nang ((hoc hoi) OR (hoi hoi)). hieu va cam xuc ((va minh) OR (va kinh)) te va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang ((hoc hoi) or (hoi hoi)). hieu va cam xuc ((va minh) OR (va kinh)) te va triet~".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ((hoc hoi) or (hoi hoi)). hieu va cam xuc ((va minh) OR (va kinh)) te va triet*.