Perhaps you should try some spelling variations:
thanh thanh » nhanh thanh, thanh toan, thanh phan
thanh cuu » thanh luu, thanh chu, thanh tuu
van thanh » ban thanh, van tuan
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
ve cac » va cac, vien cac
so hai » son hai, su hai, so ha
o hai » co hai, o lai, _ hai
o hoc » co hoc, mo hoc, so hoc

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 ky nang ((o hoc) or (((o hai) or (so hai)))). hieu ve cac xuc van thanh thanh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((o hoc) OR (((o hai) OR (so hai)))). hieu ve cac xuc van thanh thanh cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((o hoc) or (((o hai) or (so hai)))). hieu ve cac xuc van thanh thanh cuu tre*.