How to enter value in a text box without clearing present one?

I have a search-box in mobile app where I type for one value, I select from results.
But once the value is selected from results value typed in search-box can not be removed as clearing that causes deselection of value from list.
Hence, I want to keep that value and type for next search.

I tried with Keys.END

Did not help.

Let me know if anyone knows the solution or idea.

Thanks in Advance !

You can do it with following workaround

Get Text from the current search-box and copy it in a variable (say a).
Send your preferred text followed by the variable(a).

Let me know if this works.