Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
hanh dai » hanh tai, hanh dao, vanh dai
chau doc » chat doc, cau do, phau hoc
cham doc » cham soc, chat doc, pham duc
te sach » toc sach
va hanh » van hanh, va thanh, va danh
hieu ve » hieu van
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
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 thu nang xa hoi. ((hieu ve) or (hieu va)) ((cham doc) OR (chau doc)) va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang xa hoi. ((hieu ve) OR (hieu va)) ((cham doc) OR (chau doc)) va hanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu nang xa hoi. ((hieu ve) or (hieu va)) ((cham doc) OR (chau doc)) va hanh dai cua tre*".