Perhaps you should try some spelling variations:
cua triet » cua viet
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
su triet » su viet, su tien, ve triet
van cac » van hac, van cau, van bac
su sai » su tai, su hai, su dai
sai ky » sac ky
du van » duy van, duc van, tu van
x hoi » xa hoi, o hoi, x ho

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