We do not support this functionality. Well not for the form fillers. As an author you would have to make your multiline fields bigger (drag and stop the bottom right corner of the fields in the Design Tab).
If you are the author of the form and you have a paid account then you should be able to right-click on a row in the View Responses tab and select 'Download Response as PDF Form...'. This is create a PDF with the data in it. The text fields should 'grow' to show all the data so you can print (without scrollbar issues).