Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van ban
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
van anh » van thanh, tuan anh, van minh
so sac » so sach, so dac
sac ky » cac ky, sai ky
va cao » va cac, va co, va dao
x hoi » xa hoi, o hoi, x ho
ki su » ky su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang x hoi. hieu va cao duc ((va thanh) or (((van hanh) or (van anh)))) ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky nang x hoi. hieu va cao duc ((va thanh) OR (((van hanh) OR (van anh)))) ki su triet.
• Adding a wildcard symbol may retrieve word variants: so sac ky nang x hoi. hieu va cao duc ((va thanh) or (((van hanh) or (van anh)))) ki su triet*.