Perhaps you should try some spelling variations:
su triet » su tien, ve triet
thu san » thuy san, thu ban, phu san
cam thu » nam thu, cac thu, ca thu
va hanh » van hanh, va thanh, va danh
su viet » so viet
hieu ve » hieu va, hieu van
san ky » sang ky, van ky, dan ky
cam tu » nam tu, dam tu, tam tu
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 san ky nang x hoi. hieu ve ((cam tu) OR (cam thu)) va hanh vi ((su triet) OR (su viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu san ky nang x hoi. hieu ve ((cam tu) or (cam thu)) va hanh vi ((su triet) OR (su viet))~".
• Adding a wildcard symbol may retrieve word variants: thu san ky nang x hoi. hieu ve ((cam tu) or (cam thu)) va hanh vi ((su triet) OR (su viet))*.