Perhaps you should try some spelling variations:
giai lai » giai bai, gia lai, giai tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, nam duoc
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet

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: te sach ky nang xa hoi. ((hieu ve) OR (hieu qua)) ((cam duc) OR (pham duc)) va giai lai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. ((hieu ve) or (hieu qua)) ((cam duc) OR (pham duc)) va giai lai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. ((hieu ve) or (hieu qua)) ((cam duc) OR (pham duc)) va giai lai cua tre*.