Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
hieu hien » bieu hien, dieu hien, chieu chien
hien cac » thien cac, vien cac, hieu cac
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cac tuc » cac toc, cac tu, cac tac
tuc gia » tac gia, duc gia, toc gia
dinh vi » dinh ve, dinh viet, dinh tri
cuu tre » cua tre, cau tren, cau treo
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 ty nang x hoi. hieu hien cac tuc gia dinh vi ((cuu tre) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu hien cac tuc gia dinh vi ((cuu tre) OR (cau triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu hien cac tuc gia dinh vi ((cuu tre) or (cau triet))*.