Over at the Technet Magazine blog site, they’ve published a very useful article that explains exactly how to search for unique characters like line breaks, tabs, or perhaps white area. All you need to do is make use of an unique modifier in the search box.
For instance, if you intended to look for a word with a tab personality in front of it, you might use ^ tWord or something comparable. Below’s a few of the entries from the table:
Hit the web link for the complete list of special personalities.
20 Helpful Search Strings for Finding Special Characters in Word [Technet Magazine Blog]