Perhaps you should try some spelling variations:
2 germany » 12 germany, 7 germany, 2 german
2020 20th » 2020 16th, 2020 5th, 2020 2021
1990 20th » 1995 20th, 1999 20th, 1990 2000
1994 20th » 1995 20th, 1999 20th, 1994 10th
90 20th » 20 20th, 94 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 germany %((imf history) OR (brief history)) %((2020 20th) OR (((90 20th) OR (((1990 20th) OR (1994 20th)))))) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %2 germany %((imf history) OR (brief history)) %((2020 20th) or (((90 20th) or (((1990 20th) or (1994 20th)))))) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %2 germany %((imf history) OR (brief history)) %((2020 20th) or (((90 20th) or (((1990 20th) or (1994 20th)))))) century%22*.