Name for combo box with substring filter?

What do you call a combobox in which what you write in the combobox filters a (long) list that can be accessed as a dropdown menu.

Here we filter with the strings igh, s, and not old; so any line that does not contain old but which contains igh and s in any order anywhere in the line is displayed in the list, and lines not containing both ighand s or old are ignored.