Perhaps you should try some spelling variations:
nam danh » nam dinh, nam dan
tu sach » thu sach, su sach, te sach
sai cua » dai cua, hai cua, lai cua
xa danh » va danh, dia danh, van danh
cua tre » cua te, cuu tre, cua triet
hieu he » hieu ve, hiem he, hieu le
tao hoi » tao khoi, tao boi, tay hoi
ty sang » ty hang, duy sang, thu sang
he nam » ha nam, nghe nam

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