Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
su triet » su viet, su tien, ve triet
dia danh » dia ban, gia dinh
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu he » hieu ve, hiem he, hieu le
ty nang » ky nang, ty xang, ty hang
xa danh » va danh, nam danh, van danh
he nam » ha nam, nghe nam

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu he nam thu ((xa danh) OR (dia danh)) sai ((su triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu he nam thu ((xa danh) OR (dia danh)) sai ((su triet) or (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu he nam thu ((xa danh) OR (dia danh)) sai ((su triet) or (cua viet))*.