Perhaps you should try some spelling variations:
"11 german federal election" » "11 german general election", "11 german general elections", "1_ german federal election", "13 german federal election", "12 german federal election"
"1 german federal election" » "1 german general election", "1 german general elections", "_ german federal election", "3 german federal election", "2 german federal election"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"11 german federal election\") OR (\"1 german federal election\"))".
• Removing quotes may allow a broader search: (( 11 german federal election ) OR ( 1 german federal election )).
• Adding a wildcard symbol may retrieve word variants: (("11 german federal election") OR ("1 german federal election"))*.