Perhaps you should try some spelling variations:
su triet » su viet, ve triet
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
su tien » su kien, su hien, tu tieng
cam duc » cao duc, pham duc, nam duoc
hieu ve » hieu va, hieu van
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
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: tu sach v nang x hoi. hieu ve ((cam duc) OR (cam xuc)) van hanh vi ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang x hoi. hieu ve ((cam duc) OR (cam xuc)) van hanh vi ((su triet) OR (su tien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang x hoi. hieu ve ((cam duc) OR (cam xuc)) van hanh vi ((su triet) or (su tien))*".