Unless I am mistaken, you need to use the following workaround:
1. In Word, bring up the “Symbol” dialog.
2. Locate, select, then paste the character that you want into the document window.
3. Close the “Symbol” dialog.
4. Select the pasted character in the document window (leave any paragraph mark out), and copy it to the Windows clipboard (Ctrl+C).
5. Type “Alt+9633” into the Find box.
6. Type “^c” (without the quote marks) into the Replace With box. Note that “^c” will paste the current clipboard contents.
7. Do your replacements.