Perhaps you should try some spelling variations:
20th century » 18th century
11 germany » 1918 germany, 7 germany, 8 germany
2f history » 2.1 history, imf history, etf history
12 german » 2 german, 2012 german
11 german » 1 german
5 germany » 7 germany, 5 german, 8 germany
2 germany » 12 germany, 7 germany, 2 german
90 20th » 20 20th, 94 20th, 1990 20th

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: %22agriculture AND state %((((((12 german) OR (((11 germany) OR (11 german))))) OR (5 germany))) OR (2 germany)) %2f history %90 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((((((12 german) or (((11 germany) OR (11 german))))) or (5 germany))) or (2 germany)) %2f history %90 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((((((12 german) or (((11 germany) OR (11 german))))) or (5 germany))) or (2 germany)) %2f history %90 20th century%22*.