Key for 'continue search' in key command window?

As the title says, is there a way to continue the search using the keyboard when searching in the key commands window?

Tab key.
EDIT: Sorry…misunderstood…you can tab back to the search box but you want the actual "continue search button.

I´d like to know if this is possible too.

I find myself hitting enter to keep searching and it just exits the keycommand window.

Its necessary to click on the + button to keep searching for the next result.