Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thanh vai » thanh hai, thanh tai, thanh oai
tu sach » thu sach, su sach, te sach
cao xuc » cam xuc, cao duc, cao suc
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va

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 tang) or (ky dang)) xa hoi. hieu va cao xuc va ((thanh vai) OR (thanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky tang) OR (ky dang)) xa hoi. hieu va cao xuc va ((thanh vai) OR (thanh van)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky tang) or (ky dang)) xa hoi. hieu va cao xuc va ((thanh vai) OR (thanh van)) cua tre*".