Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
duc van » duc va, duc tan, duc manh
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, dua tren
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
su sai » su tai, su hai, su dai
sai ky » sac ky
ha hoi » hoa hoi, ha noi, va hoi
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky dang ((ha hoi) OR (xa hoi)). hieu ve cao duc van hanh thai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang ((ha hoi) OR (xa hoi)). hieu ve cao duc van hanh thai ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky dang ((ha hoi) OR (xa hoi)). hieu ve cao duc van hanh thai ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sai ky dang ((ha hoi) OR (xa hoi)). hieu ve cao duc van hanh thai ((cua tre) or (cua triet))*.