Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
duoc xa » duoc ma, duoc va, duoc ha
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nong xa » song xa, dong xa, nong va
tu nong » tu dong, tu cong, tu tong
duc xa » tuc xa, duc va, duc ha
va dao » ca dao

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