Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lang xa » lang ha, dang xay, lang van
hanh di » hanh de, hang di, danh di
hieu ve » hieu va, hieu van
sang ky » sang kyo, dang ky, tang ky
ban ky » van ky, dan ky
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu

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