Perhaps you should try some spelling variations:
25 germany » 5 germany, 2 germany, 20 germany
2f history » imf history, etf history, ref history
2019 20th » 2019 4th, 2019 6th, 2019 5th
94 24th » 94 4th, 24 24th, 94 20th
94 14th » 14 14th, 94 11th, 94 19th

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 (7 germany)) %2f history %((2019 20th) OR (((94 24th) OR (94 14th)))) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22agriculture and state %((25 germany) or (7 germany)) %2f history %((2019 20th) or (((94 24th) OR (94 14th)))) century%22".
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((25 germany) or (7 germany)) %2f history %((2019 20th) or (((94 24th) OR (94 14th)))) century%22*.