A convenient method of navigating around in a zoomed in document, without using the scroll bars at the right/bottom of the CorelDRAW Window or Corel PhotoPaint Window, is to hit the keyboard letter 'n' (while NOT in text mode) and navigate your view in the popup window. Once you position the view box (in the popup window), click on it and your view is navigated to your selection.
Another way to navigate around a document, use the wheel button of the mouse. With the cursor someplace on the workspace, press down on the mouse wheel. The display will show a quad arrow, denoting the four prime directions (up, down, left and right). The further you move the cursor from the the quad-arrow icon, the further you will be scrolling the image in that direction. When you are finished, press down on the wheel again, to disengage the scrolling effect.