Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cua tre » cua te, cuu tre, cua triet
benh vi » benh va, benh ve, benh li
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
xuc ban » duc ban, cuc ban, quoc ban
hieu va » lieu va, hieu qua
banh vi » hanh vi, ban vi, banh chi
va cam » va cham, va cac, va cao
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 ky nang x hoi. hieu va cam xuc ban ((banh vi) OR (benh vi)) ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu va cam xuc ban ((banh vi) OR (benh vi)) ((cua tre) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu va cam xuc ban ((banh vi) OR (benh vi)) ((cua tre) or (su triet))*".