Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
va hanh » van hanh, va thanh, va danh
cac xuc » cac nuoc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet

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) or (thuoc sach)) ky dang xa hoi. hieu ve ((cac xuc) OR (cam xuc)) va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky dang xa hoi. hieu ve ((cac xuc) OR (cam xuc)) va hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thuoc sach)) ky dang xa hoi. hieu ve ((cac xuc) OR (cam xuc)) va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky dang xa hoi. hieu ve ((cac xuc) OR (cam xuc)) va hanh dai cua tre*.