Perhaps you should try some spelling variations:
"biographer" » "biographies", "biography", "geographer"
"biographie" » "biographies", "biography", "biographical"
"biographien" » "biographiesn", "biographyn", "biographicaln", "biographies", "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 "biographie") OR "biographien").
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"biographer\" OR \"biographie\") or \"biographien\")".
• Removing quotes may allow a broader search: (( biographer OR biographie ) or biographien ).
• Adding a wildcard symbol may retrieve word variants: (("biographer" OR "biographie") or "biographien")*.