Perhaps you should try some spelling variations:
20 germany » 7 germany, 8 germany, 5 germany
2f history » imf history, etf history, ref history
25 germany » 5 germany, 21 germany, 26 germany
2 germany » 7 germany, 2 german, 8 germany
2019 20th » 2019 4th, 2019 6th, 2019 5th
2023 20th » 2023 26th, 2023 10th, 2020 20th
90 20th » 94 20th, 1990 20th
20 20th » 2020 20th, 2021 20th, 2017 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 %((25 germany) OR (((20 germany) OR (2 germany)))) %2f history %((2019 20th) OR (((90 20th) OR (((20 20th) OR (2023 20th)))))) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((25 germany) or (((20 germany) or (2 germany)))) %2f history %((2019 20th) or (((90 20th) or (((20 20th) OR (2023 20th)))))) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((25 germany) or (((20 germany) or (2 germany)))) %2f history %((2019 20th) or (((90 20th) or (((20 20th) OR (2023 20th)))))) century%22*.