Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
toc van » hoc van, toc san, tac van
cac toc » cac toi, cac nuoc, cac thoi
van cac » van hac, van cau, van bac
sai ky » sac ky
mo hoi » mo phoi, mo hoc, co hoi
ro hoi » co hoi, o hoi, ro doi
su sai » su tai, su hai, su dai

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 ((ro hoi) OR (mo hoi)). thien van cac toc 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 ((ro hoi) OR (mo hoi)). thien van cac toc 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 ((ro hoi) OR (mo hoi)). thien van cac toc van hanh vi ((cua triet) or (su triet))*".