Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
chien cac » hien cac, thien cac, chien cuoc
cac loai » cac bai, cac giai, cac dai
cua tre » cuu tre, cua triet, dua tren
dinh va » dinh van, dinh ve, tinh va
va dinh » van dinh, va kinh, va tinh
loai va » loai nam
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cua te » cua tu
o hoi » co hoi, o hoc, o hai
x hoi » xa hoi, x ho, 5 hoi

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) OR (o hoi)). chieu chien cac loai va dinh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((x hoi) OR (o hoi)). chieu chien cac loai va dinh va ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ((x hoi) OR (o hoi)). chieu chien cac loai va dinh va ((cua tre) or (cua te))*".