Perhaps you should try some spelling variations:
chat tuc » chat xuc, luat tuc, chat huu
tu sach » thu sach, su sach, te sach
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
xa dinh » xac dinh, va dinh, ba dinh
dinh va » dinh van, dinh ve, tinh va
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 ((ky tang) OR (ky nang)) xa hoi. hieu ve chat tuc xa dinh va ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky tang) OR (ky nang)) xa hoi. hieu ve chat tuc xa dinh va ((cua tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky tang) OR (ky nang)) xa hoi. hieu ve chat tuc xa dinh va ((cua tre) or (cua te))*.