Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh le » thinh le, thanh ve, thanh de
chat xuc » chat huu, cam xuc, chat cua
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ky danh » ky anh
ky dang » ky nang
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((ky dang) or (ky danh)) ha hoi. hieu ve ((chat xuc) OR (chao xu)) van thanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ky dang) OR (ky danh)) ha hoi. hieu ve ((chat xuc) OR (chao xu)) van thanh le cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ky dang) or (ky danh)) ha hoi. hieu ve ((chat xuc) OR (chao xu)) van thanh le cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ((ky dang) or (ky danh)) ha hoi. hieu ve ((chat xuc) OR (chao xu)) van thanh le cua tre*.