Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
lang van » dang van, tang van, hoang van
van hanh » van thanh, ban hanh, van anh
va cham » va chat, va tham
soc van » hoc van, oc van, sac van
lang xa » lang ha, dang xay
san ky » sang ky, van ky, dan ky
tu san » thu san, tu ban, tu can

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 ((lang xa) OR (lang van)) hoi. lieu va cham soc van hanh vi ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((lang xa) OR (lang van)) hoi. lieu va cham soc van hanh vi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((lang xa) OR (lang van)) hoi. lieu va cham soc van hanh vi ((cua triet) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((lang xa) OR (lang van)) hoi. lieu va cham soc van hanh vi ((cua triet) or (va triet))*.