Perhaps you should try some spelling variations:
"litterature allemagne" » "litterature allemande", "litteraire allemagne", "literature alleen"
"literature allemande" » "litterature allemande", "literature alleen", "literature alessandra"
"litteraire allemand" » "litteraire allemagne", "litterature allemande"

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: (("literature allemande") OR ((("litterature allemagne") OR ("litteraire allemand"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literature allemande\") or (((\"litterature allemagne\") OR (\"litteraire allemand\"))))*".
• Removing quotes may allow a broader search: (( literature allemande ) or ((( litterature allemagne ) OR ( litteraire allemand ))))*.