Using Find and Replace Tool for word you can find and replace multiple text in multiple word documents or docs.
How to Find and Replace Numbers or Digits in MS Word
If you have several dozen word files which contain the same content (such as Header, footer, some special words or number), and you need to replace the same content across those documents in Word.
Go to the “Home” tab menu on the Ribbon of Microsoft Word 2007/2010/2013, at the furthest right of the group is the “Editing” options.
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