Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
toc sach » hoc sach, doc sach, thuoc sach
chat xuc » cam xuc, chao xu, chat cua
tru nang » tra nang, tri nang, truc nano
chat huu » pham huu
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
tu nang » tu nong, tu nano, tu lang
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: toc sach ((tu nang) OR (tru nang)) xa hoi. hieu va ((chat xuc) or (chat huu)) van thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((tu nang) OR (tru nang)) xa hoi. hieu va ((chat xuc) OR (chat huu)) van thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((tu nang) OR (tru nang)) xa hoi. hieu va ((chat xuc) or (chat huu)) van thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ((tu nang) OR (tru nang)) xa hoi. hieu va ((chat xuc) or (chat huu)) van thanh vai cua tre*.