Perhaps you should try some spelling variations:
20th century » 18th century
2.1 germany » 21 germany, 2017 germany, 9.13 germany
2f germany » 2 germany, 21 germany, 25 germany
20 germany » 2 germany, 7 germany, 8 germany
2020 20th » 2020 16th, 2020 2021, 2020 5th

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 %((2f germany) OR (((20 germany) OR (2.1 germany)))) %((imf history) OR (brief history)) %2020 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((2f germany) or (((20 germany) or (2.1 germany)))) %((imf history) OR (brief history)) %2020 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((2f germany) or (((20 germany) or (2.1 germany)))) %((imf history) OR (brief history)) %2020 20th century%22*.