Perhaps you should try some spelling variations:
2017 germany » 20 germany, 17 germany, 2006 germany
2.1 germany » 21 germany, 9.13 germany, 9.14 germany
imf history » brief history
2020 20th » 2020 2021, 2020 5th, 2020 4th

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 %((7 germany) OR (((2.1 germany) OR (2017 germany)))) %imf history %((2020 20th) OR (2020 16th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((7 germany) or (((2.1 germany) OR (2017 germany)))) %imf history %((2020 20th) or (2020 16th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((7 germany) or (((2.1 germany) OR (2017 germany)))) %imf history %((2020 20th) or (2020 16th)) century%22*.