I had a hard time today doing a find for all of the question marks ? in my spreadsheet. This is becuase Excel treats this as a wildcard. To search for wildcards just put a tilde ~ in front of your search.

Here are a few examples:

To find ? in a spreadsheet enter ~? in the find box.

To find ~ in a spreadsheet enter ~~ in the find box.

To find * in a spreadsheet enter ~* in the find box.