Jack is using a document that has multiple references to his company as company abc, llc. he would like to change these values to companyabc, llc.

what is the easiest way to do this?

use the find option to find each value and manually change them.
copy the text you want to use as a replacement and use the find dialog box to find each value to paste the replacement text.
press ctrl+h to access the find and replace dialog box.
use the format painter option