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
1990 20th » 1995 20th, 1999 20th, 1994 20th
2021 20th » 2021 24th, 2020 20th, 2021 10th
20 20th » 90 20th, 2019 20th, 2020 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 (_ germany))) OR (((2 germany) OR (12 germany)))) %((imf history) OR (brief history)) %((2021 20th) OR (((((20 20th) OR (2019 4th))) OR (1990 20th)))) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((((2f germany) or (_ germany))) or (((2 germany) OR (12 germany)))) %((imf history) or (brief history)) %((2021 20th) or (((((20 20th) or (2019 4th))) or (1990 20th)))) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((((2f germany) or (_ germany))) or (((2 germany) OR (12 germany)))) %((imf history) or (brief history)) %((2021 20th) or (((((20 20th) or (2019 4th))) or (1990 20th)))) century%22*.