Perhaps you should try some spelling variations:
va triet » va thiet, va trien, cua triet
ve triet » va trien, su triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh
so sac » so sach
so dac » so dan

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: ((so sac) OR (so dac)) ky lang xa hoi. hieu qua cac duc va hanh vi ((va triet) OR (ve triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sac) OR (so dac)) ky lang xa hoi. hieu qua cac duc va hanh vi ((va triet) or (ve triet))~".
• Adding a wildcard symbol may retrieve word variants: ((so sac) OR (so dac)) ky lang xa hoi. hieu qua cac duc va hanh vi ((va triet) or (ve triet))*.