Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
22christian union » christian union, christian unity, christian upon
ref history » reef history, bief history, imf history
20 germany » 7 germany, 8 germany, 5 germany
21 germany » 2.1 germany, 11 germany, 1 germany
2 germany » 12 germany, 7 germany, 2 german
2f 20th » 2.2 20th
20 20th » 90 20th, 2019 20th, 2020 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 %((20 germany) OR (((21 germany) OR (2 germany)))) %((ref history) OR (brief history)) %((2f 20th) OR (20 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian union conversations %((20 germany) or (((21 germany) or (2 germany)))) %((ref history) or (brief history)) %((2f 20th) OR (20 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian union conversations %((20 germany) or (((21 germany) or (2 germany)))) %((ref history) or (brief history)) %((2f 20th) OR (20 20th)) century%22*.