Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hanh de » hanh ve, hanh kem
lang xa » lang ha, dang xay, lang van
xuc van » duc van, luc van, vuc van
de cua » le cua, te cua, dieu cua
san ky » sang ky, van ky, ban ky
va cao » va cac, va dao, va bao
dan ky » van ky
va co » vo co

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 cao) OR (va co)) xuc van hanh de 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 cao) OR (va co)) xuc van hanh de 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 cao) OR (va co)) xuc van hanh de cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (dan ky)) lang xa hoi. lieu ((va cao) OR (va co)) xuc van hanh de cua triet*.