Perhaps you should try some spelling variations:
2.1 germany » 21 germany, 2017 germany, 9.13 germany
2f history » imf history, etf history, ref history
2 germany » _ germany, 7 germany, 2 german
8 germany » _ germany, 7 germany, 1918 germany
2020 20th » 2020 16th, 2020 2021, 2020 5th
20 20th » 90 20th, 2019 20th, 2023 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 %((2.1 germany) OR (((2 germany) OR (8 germany)))) %2f history %((20 20th) OR (2020 20th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((2.1 germany) or (((2 germany) or (8 germany)))) %2f history %((20 20th) or (2020 20th)) century%22*.