Perhaps you should try some spelling variations:
21 germany » 11 germany, 20 germany, 5 germany
2f history » imf history, etf history, ref history
2 germany » 2 german, 5 germany, 6 germany
8 germany » 1918 germany
2090 20th » 2020 20th, 2010 20th, 2000 20th
90 20th » 20 20th, 94 20th, 1990 20th

Try widening your search to All Fields.

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 %((((21 germany) OR (2 germany))) OR (((8 germany) OR (7 germany)))) %2f history %((90 20th) OR (2090 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((((21 germany) or (2 germany))) or (((8 germany) OR (7 germany)))) %2f history %((90 20th) or (2090 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((((21 germany) or (2 germany))) or (((8 germany) OR (7 germany)))) %2f history %((90 20th) or (2090 20th)) century%22*.