Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
cua triet » cua viet, su triet, va triet
van thanh » ban thanh, van tuan
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
va hoi » va hoc, va hoa
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 ((va hoi) or (xa hoi)). hieu ve cao duc van thanh thai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang ((va hoi) OR (xa hoi)). hieu ve cao duc van thanh thai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sai ky dang ((va hoi) or (xa hoi)). hieu ve cao duc van thanh thai ((cua tre) or (cua triet))*.