A family of Microsoft word processing software products for creating web, email, and print documents.
Yes, you can.
First, it helps to know what they are. The degree symbol to the left of the capital I is a "nonbreaking space". In the Find and Replace dialog, you can search for that by typing ^s . The dots between words are regular spaces, which you can find by typing a space in the search box.
If you don't want to see these symbols, click the ¶ button on the ribbon to turn it off.
For a list of all the odd characters, read http://wordfaqs.ssbarnhill.com/NonprintChars.htm .