Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
22christian union » christian union, christian unity, christian upon
reef history » reeves history, reef fishery, imf history
bief history » brief hystory, imf history, brief herstory
20th century » 18th century
ref history » imf history, etf history, tnf history
20 germany » 2 germany, 7 germany, 8 germany
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 %((((reef history) OR (((ref history) OR (brief history))))) OR (bief history)) %20 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian union conversations %20 germany %((((reef history) or (((ref history) OR (brief history))))) or (bief history)) %20 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian union conversations %20 germany %((((reef history) or (((ref history) OR (brief history))))) or (bief history)) %20 20th century%22*.