You can get a headset with a shorter stack height or buy a new fork with a longer steerer tube. I assume that you are talking about a threadless head set.
And if the reason you wish to do it is to adjust the handle bars you can change the stem
Multiple angles are available even though most are -/+ 4 to 8, (flippable) you can get them from 0 to about 12, after that you can get adjustable ones