Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
va triet » va thiet, va trien, cua triet
ky hang » ky nang, ly hang, ky dang
va cham » va chat, va tham
soc van » hoc van, oc van, sac van
hanh de » hanh ve, hanh kem
su viet » so viet
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
va hoi » xa hoi, va hoc, va hoa

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 hang va hoi. lieu va cham soc van hanh de ((((ve triet) or (su viet))) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky hang va hoi. lieu va cham soc van hanh de ((((ve triet) OR (su viet))) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: tu san ky hang va hoi. lieu va cham soc van hanh de ((((ve triet) or (su viet))) or (va triet))*.