Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
van thanh » ban thanh, van tuan
sang tao » hang tai
so sach » so sanh, bo sach, co sach
ty sang » ty xang, ty hang, duy sang
hieu ve » hieu van
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
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: ((so sach) or (vu bach)) ty sang tao boi. ((hieu ve) or (hieu va)) cam xuc van thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (vu bach)) ty sang tao boi. ((hieu ve) OR (hieu va)) cam xuc van thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (vu bach)) ty sang tao boi. ((hieu ve) or (hieu va)) cam xuc van thanh dai cua tre*.