Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
hieu ve » hieu va, hieu van
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cac » va cac, vien cac
cac tu » cac thu, cach tu, cac du
tu van » tu va
x hoi » o hoi, x ho, 5 hoi

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 nang ((x hoi) OR (xa hoi)). hieu ve cac tu van hanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky nang ((x hoi) OR (xa hoi)). hieu ve cac tu van hanh vi ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky nang ((x hoi) OR (xa hoi)). hieu ve cac tu van hanh vi ((cua triet) or (su triet))*".