Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ban » thanh san, thanh van, thanh bac
tu sach » thu sach, su sach, te sach
tu nong » tu dong, tu cong, tu tong
hieu va » hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
ban cua » ban quan
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: tu sach ((tu nong) or (truc nano)) xa hoi. ((hieu va) or (lieu va)) cac xuc van thanh ban cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu nong) OR (truc nano)) xa hoi. ((hieu va) OR (lieu va)) cac xuc van thanh ban cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu nong) or (truc nano)) xa hoi. ((hieu va) or (lieu va)) cac xuc van thanh ban cua tre*.