Browsing library objects
You can scroll library objects by mouse.
Finding library objects
Type something in the Name field - the list of displayed library objects is filtered to the content you typed. Note: in older configurations the Name field may be unavailable.
Change the library objects view
You can select the view of library objects. Drag the horizontal slider, or select the List or Thumbnails directory style (first button in the command bar on the bottom). Slider on left switches to the list; drag it right to switch to thumbnails, and then even more right to increment the thumbnails size.
On the figure: list view (left), thumbnails view (middle), even closer zoom (right).