Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
van nhan » danh nhan, van khanh, van khang
van phan » van phong, luan phan, van ban
toc sach » hoc sach, doc sach, thuoc sach
vai cua » dai cua, hai cua, lai cua
luc van » luoc van, luu van, duc van
cua tre » cua te, cuu tre, cua triet
nang co » nang cao, nang doc, nang noi
v nang » va nang, vu nang, van nang

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) OR (toc sach)) v nang co hoc. hieu ((van nhan) or (van phan)) luc van thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) v nang co hoc. hieu ((van nhan) OR (van phan)) luc van thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) v nang co hoc. hieu ((van nhan) or (van phan)) luc van thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) v nang co hoc. hieu ((van nhan) or (van phan)) luc van thanh vai cua tre*.