Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
su triet » su viet, su tien, ve triet
hien cac » thien cac, vien cac, hieu cac
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
tinh va » tich va, trinh van, trinh vat
te sach » toc sach
cao va » cao van, tao va, co va
dao va » dao van, tao va, do va
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: te sach ky nang x hoi. hieu hien cac ((dao va) or (cao va)) tinh va ((cuu tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu hien cac ((dao va) OR (cao va)) tinh va ((cuu tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu hien cac ((dao va) or (cao va)) tinh va ((cuu tre) or (su triet))*.