Perhaps you should try some spelling variations:
2f germany » 20 germany, 21 germany, 25 germany
12 germany » 11 germany, 12 german, 14 germany
2 germany » 7 germany, 2 german, 8 germany
2020 20th » 2020 2021, 2020 5th, 2020 4th
2.2 20th » 2023 20th, 2021 20th, 2022 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 %((2f germany) OR (((2 germany) OR (12 germany)))) %brief history %((2.2 20th) OR (((2020 20th) OR (2020 16th)))) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((2f germany) or (((2 germany) OR (12 germany)))) %brief history %((2.2 20th) or (((2020 20th) or (2020 16th)))) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((2f germany) or (((2 germany) OR (12 germany)))) %brief history %((2.2 20th) or (((2020 20th) or (2020 16th)))) century%22*.