Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sang kyo » sang ky, sang tao, dang ky
van hanh » van thanh, ban hanh, van anh
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 » sang ky, van ky, dan 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 kyo)) dang xa hoi. lieu va cham soc van hanh di ((cua triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (sang kyo)) 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 kyo)) dang xa hoi. lieu va cham soc van hanh di ((cua triet) or (va thiet))*.