Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cam tu » cam thu, nam tu, tam tu
dam tu » nam tu, tam tu, dam thuc

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: tu sac ky nang xa hoi. hieu ve ((cam tu) OR (dam tu)) va hanh vi ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu ve ((cam tu) OR (dam tu)) va hanh vi ((cua triet) or (va triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu ve ((cam tu) OR (dam tu)) va hanh vi ((cua triet) or (va triet))*.