Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design conclusions
union conversations » win conversations, driven conversations, invent conversations
20th century » 18th century
bief history » brief history, brief hystory, brief herstory
reef history » brief history, reeves history, reef fishery
imf history » brief history
ref history » brief history, tnf history, reform history
etf history » tnf history, beruf history, ethis history
2f germany » 20 germany, 21 germany, 25 germany
2 germany » 12 germany, 7 germany, 2 german
2019 20th » 2019 4th, 2019 6th, 2019 5th

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 conversations)) %((2f germany) OR (2 germany)) %((((etf history) OR (((((ref history) OR (reef history))) OR (imf history))))) OR (bief history)) %2019 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (design conversations)) %((2f germany) or (2 germany)) %((((etf history) or (((((ref history) OR (reef history))) or (imf history))))) or (bief history)) %2019 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conversations)) %((2f germany) or (2 germany)) %((((etf history) or (((((ref history) OR (reef history))) or (imf history))))) or (bief history)) %2019 20th century%22*.