Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
sang ky » sang kyo, dang ky, tang ky
dang xa » dang xay, lang xa, dang ha
va cham » va chat, va tham
soc van » hoc van, oc van, sac van
hanh di » hanh vi, hanh de, hang di
san ky » van ky, dan ky, ban ky
thiet » thieu

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 (sang ky)) dang xa hoi. lieu va cham soc van hanh di ((cua triet) OR (va thiet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) OR (sang ky)) dang xa hoi. lieu va cham soc van hanh di ((cua triet) OR (va thiet))".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) OR (sang ky)) dang xa hoi. lieu va cham soc van hanh di ((cua triet) OR (va thiet))*.