Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
sach thu » sach thue, sach thieu, sach tham
cam duc » cam xuc, cao duc, nam duoc
hieu va » lieu va, hieu qua
sach tu » cach tu, sach ty, sach uu
hang xa » hoang xa, hang va, hang ca
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 tu) OR (sach thu)) hang xa hoi. hieu va ((cam duc) or (pham duc)) ban thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (sach thu)) hang xa hoi. hieu va ((cam duc) OR (pham duc)) ban thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) OR (sach thu)) hang xa hoi. hieu va ((cam duc) or (pham duc)) ban thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) OR (sach thu)) hang xa hoi. hieu va ((cam duc) or (pham duc)) ban thanh dai cua tre*.