Can anyone help me in code for designing VF page with following functionalities.?

The account manager now wants the function to search for a particular account from the account list page.
Add a textbox to the top of the VF page that will take the account name. Add a button as well that will perform the search on the accounts and display the results accordingly. The count of the accounts should also be updated.
The search should also be performed on pressing the enter button on the keyboard. If nothing has been entered in the textbox, a message should be displayed stating that “Input at least 3 characters to perform search”.

The results of the search should be displayed without refreshing the page. Also add a link to clear the search results.