Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
doc sach » hoc sach, toc sach, nuoc sach
chat huu » pham huu
chat xuc » cam xuc, chao xu, chat cua
hieu ve » hieu va, hieu van
ty nang » ty xang, ty hang, ly nang
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ((ty nang) OR (ky nang)) xa hoi. hieu ve ((chat xuc) OR (chat huu)) van thanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ((ty nang) OR (ky nang)) xa hoi. hieu ve ((chat xuc) or (chat huu)) van thanh vai cua tre~".
• Adding a wildcard symbol may retrieve word variants: doc sach ((ty nang) OR (ky nang)) xa hoi. hieu ve ((chat xuc) or (chat huu)) van thanh vai cua tre*.