Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
cac tuc » cac toc, cac tu, cac tac
hieu ve » hieu va, hieu van
tuc van » thuc van, truc van, tuc va
su sai » su tai, su hai, su dai
ve cac » va cac, vien cac
sai ky » sac ky
o hoi » co hoi, o hoc, o hai
x hoi » xa 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 (o hoi)). hieu ve cac tuc 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 (o hoi)). hieu ve cac tuc 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 (o hoi)). hieu ve cac tuc van hanh vi ((cua triet) or (su triet))*".