Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
lang xa » lang ha, dang xay, lang van
hanh di » hanh vi, hanh de, hang di
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
va cam » va cham, va cac, va cao
san ky » sang ky, van ky, ban ky
dan ky » van 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 (dan ky)) lang xa hoi. lieu va cam duc ban hanh di ((cua triet) or (va thiet))~.
• 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 duc ban hanh di ((cua triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) or (dan ky)) lang xa hoi. lieu va cam duc ban hanh di ((cua triet) or (va thiet))*.