A family of Microsoft word processing software products for creating web, email, and print documents.
Office 32 bit Win 64 bit is a normal installation.
MS still recommends that even with 64 bit OS you use 32 bit Office unless you have an explicit need for 64 bit. That explicit need is handling LARGE files, usually spreadsheets, that are in the 2GB file size range and/or files that require 2GB or more of RAM during processing (ie spreadsheet calculations). The short reason is that many vendors, ESPECIALLY MS, have not BOTHERED to create 64 bit versions of their addons.
I suspect the fix for your problem is simple. Just ZOOM out, use <CTL><mouse scroll wheel> to adjust the zoom level. As you scroll out, you will see a bookfold representation.