Can you upload a couple of pages from the document before the issue has been fixed, and I can take a look at how I would approach it?
Might be best to send the Word doc, so I can see if there’s some way to avoid the problem coming into InDesign.
The likely solution is a rather complex search which would look for any and all of those characters in one go, that you would save somewhere in a text doc and copy&paste to the search field.
In any case, seeing the exact problem you’re dealing with would ensure I understand the problem fully.
Kalleheikki Kannisto
Senior Graphic Designer