Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
xa thanh » va thanh, ha thanh, ta thanh
te sach » toc sach
tu nong » tu dong, tu tong, tu tuong
tu cong » thu cong, te cong, tai cong
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao
duc xa » duoc xa, tuc xa, duc va

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 nong) or (tu cong)) xa hoi. hieu va cao duc xa thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nong) OR (tu cong)) xa hoi. hieu va cao duc xa thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nong) or (tu cong)) xa hoi. hieu va cao duc xa thanh dai cua tre*.