Perhaps you should try some spelling variations:
21 germany » 11 germany, 2 germany, 20 germany
2f history » imf history, etf history, ref history
8 germany » _ germany, 7 germany, 1918 germany
2020 20th » 2020 16th, 2020 2021, 2020 5th
2 german » _ german, 3 german, 5 german
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 %((21 germany) OR (((2 german) OR (8 germany)))) %2f history %((20 20th) OR (2020 20th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((21 germany) or (((2 german) or (8 germany)))) %2f history %((20 20th) or (2020 20th)) century%22*.