Autocomplete combobox, prev + next result set, how?

Autocomplete combobox, prev + next result set, how?

Hello, i have a autocomplete combobox and it works fine, i want to add a option that users instead of typing some part of a string to get the items they want, I want the users to have the opportunity to browse through the items with a next/prev. button.

Is it possible if so how?