Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hanh di » hanh vi, hanh de, hang di
lang xa » lang ha, dang xay, lang van
xuc van » duc van, luc van, vuc van
va cao » va cac, va co, va dao
di cua » dai cua, doi cua, de cua
san ky » sang ky, van ky, ban ky
va cam » va cham, va cac, va cai
dan ky » van ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((san ky) or (dan ky)) lang xa hoi. lieu ((va cam) OR (va cao)) xuc van hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (dan ky)) lang xa hoi. lieu ((va cam) OR (va cao)) xuc van hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) or (dan ky)) lang xa hoi. lieu ((va cam) OR (va cao)) xuc van hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (dan ky)) lang xa hoi. lieu ((va cam) OR (va cao)) xuc van hanh di cua triet*.