Perhaps you should try some spelling variations:
"biographer" » "biography", "geographer", "biographia"
"biographies" » "biographical", "biographys", "biographicals"
"biographien" » "biographical", "biographyn", "biographicaln"
"biographie" » "biography", "biographical"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("biographer" OR "biographies") OR ("biographien" OR "biographie")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"biographer\" or \"biographies\") or (\"biographien\" OR \"biographie\"))".
• Removing quotes may allow a broader search: (( biographer or biographies ) or ( biographien OR biographie )).
• Adding a wildcard symbol may retrieve word variants: (("biographer" or "biographies") or ("biographien" OR "biographie"))*.