Perhaps you should try some spelling variations:
"biographie" » "biographies", "biographical"
"biographien" » "biographiesn", "biographicaln", "biographies", "biographical"
"biographiesn" » "biographiessn", "biographicalsn", "biographies", "biographen", "biographes"
"biography" » "bibliography"

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: (("biographie" OR "biography") OR ("biographien" OR "biographiesn")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"biographie\" or \"biography\") or (\"biographien\" OR \"biographiesn\"))".
• Removing quotes may allow a broader search: (( biographie or biography ) or ( biographien OR biographiesn )).
• Adding a wildcard symbol may retrieve word variants: (("biographie" or "biography") or ("biographien" OR "biographiesn"))*.