Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
22christian union » christian union, christian unity, christian upon
20th century » 18th century
ref history » reef history, brief history, bief history
2.1 germany » 2017 germany, 9.13 germany, 9.14 germany
11 germany » 11 german, 1918 germany, 7 germany
21 germany » 25 germany, 26 germany, 27 germany
20 germany » 7 germany, 8 germany, 5 germany
2 germany » 12 germany, 7 germany, 2 german
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 %((20 germany) OR (((((((21 germany) OR (11 germany))) OR (2 germany))) OR (2.1 germany)))) %ref history %2f 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 (11 germany))) or (2 germany))) or (2.1 germany)))) %ref history %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian union conversations %((20 germany) or (((((((21 germany) OR (11 germany))) or (2 germany))) or (2.1 germany)))) %ref history %2f 20th century%22*.