Check the source code of the admin page, and search for meta charset. You page should contain a <meta charset="utf-8" /> tag to instruct the browser the characters on your page are encoded in Unicode (UTF-8). This character encoding supports all characters, and is also recommended encoded for your pages for indexing in Google. If you page is not in UTF-8, Google converts it to UTF-8 before indexing it in their cache. So not having your page in UTF-8 can have unexpected and undesired results in Google’s indexation.
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