Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cam tuc » cam tu, nam thuc, dam thuc
hoc hoi » hoc khoi, hoc hoa, hoc noi
minh de » menh de, minh ve, sinh de
va minh » van minh, vua minh, va kinh
hoi hoi » hoi hoc, hoi doi, doi hoi
hieu va » lieu va, hieu qua
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
de va » de van, te va, ke 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 tuc) OR (cam xuc)) va minh de 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 tuc) OR (cam xuc)) va minh de va triet~".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ((hoc hoi) or (hoi hoi)). hieu va ((cam tuc) OR (cam xuc)) va minh de va triet*.