Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
su triet » su viet, su tien, ve triet
va triet » va thiet, va trien, ve triet
van hanh » ban hanh, van anh, van ban
cac dung » cach dung, cac duong, tac dung
hieu van » hieu va, thien van, lieu va
van cac » van hac, van cau, van bac
hai ky » thai ky, hoi ky, hai ly
su hai » su tai
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 hai ky nang x hoi. hieu van cac dung ((van hanh) OR (van thanh)) vi ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su hai ky nang x hoi. hieu van cac dung ((van hanh) OR (van thanh)) vi ((va triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su hai ky nang x hoi. hieu van cac dung ((van hanh) OR (van thanh)) vi ((va triet) or (su triet))*".