Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tan thanh » tran thanh, tang thanh, toan thanh
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
vai cua » dai cua, hai cua, lai cua
luc tan » luc tai, duc tan, luc tam
bao luc » bao thuc
van bao » van ban, van dao
cua tre » cua te, cuu tre, cua triet
te sach » toc sach
co hoi » co hoc, co loi
y nang » ky nang, ly nang, v nang
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) or (te sach)) y nang ((co hoi) or (o hoc)). hieu van bao luc tan thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y nang ((co hoi) OR (o hoc)). hieu van bao luc tan thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) y nang ((co hoi) or (o hoc)). hieu van bao luc tan thanh vai cua tre*.