Perhaps you should try some spelling variations:
2017 germany » 17 germany, 2006 germany, 21 germany
imf history » brief history
20 germany » 2 germany, 7 germany, 8 germany
1990 20th » 1995 20th, 1999 20th, 1994 20th
2f 20th » 20 20th, 2.2 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 %((20 germany) OR (2017 germany)) %imf history %((2f 20th) OR (1990 20th)) century%22.
• Adding a wildcard symbol may retrieve word variants: %22agriculture and state %((20 germany) or (2017 germany)) %imf history %((2f 20th) or (1990 20th)) century%22*.