Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
imf history » brief history
11 germany » 11 german, 1918 germany, 7 germany
2f history » 2.1 history, etf history, ref history
20 18th » 2017 18th, 2021 18th, 2018 18th

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: %22christian ((union conversations) OR (design conclusion)) %11 germany %((2f history) OR (imf history)) %20 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (design conclusion)) %11 germany %((2f history) OR (imf history)) %20 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conclusion)) %11 germany %((2f history) OR (imf history)) %20 18th century%22*.