Perhaps you should try some spelling variations:
1918 germany » 8 germany
2f history » imf history, etf history, ref history
11 germany » 11 german, 7 germany, 8 germany
21 germany » 2 germany, 20 germany, 7 germany
20 20th » 2019 20th, 2020 20th, 2023 20th
90 20th » 94 20th, 1990 20th
94 24th » 94 4th, 94 14th, 24 24th

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 (((11 germany) OR (1918 germany)))) %2f history %((20 20th) OR (((90 20th) OR (94 24th)))) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((21 germany) or (((11 germany) OR (1918 germany)))) %2f history %((20 20th) or (((90 20th) or (94 24th)))) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((21 germany) or (((11 germany) OR (1918 germany)))) %2f history %((20 20th) or (((90 20th) or (94 24th)))) century%22*.