Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
design conclusions » design conclusion
2017 germany » 20 germany, 17 germany, 2006 germany
20th century » 18th century
2f history » 2.1 history, imf history, etf history
8 germany » 1918 germany
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: %22christian ((union conversations) OR (design conclusions)) %((((7 germany) OR (8 germany))) OR (2017 germany)) %2f history %2f 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conclusions)) %((((7 germany) or (8 germany))) or (2017 germany)) %2f history %2f 20th century%22*.