Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design conclusions
union conversations » win conversations, driven conversations, invent conversations
bief history » brief history, brief hystory, imf history
reef fishery » reef fishes, reef fish
reef history » brief history, reeves history, imf history
ref history » brief history, imf history, tnf history
etf history » imf history, tnf history, beruf history
2f germany » 2 germany, 20 germany, 21 germany
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) OR (design conversations)) %2f germany %((((((etf history) OR (ref history))) OR (((reef history) OR (reef fishery))))) OR (bief history)) %((2f 20th) OR (20 20th)) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (design conversations)) %2f germany %((((((etf history) OR (ref history))) or (((reef history) or (reef fishery))))) or (bief history)) %((2f 20th) or (20 20th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conversations)) %2f germany %((((((etf history) OR (ref history))) or (((reef history) or (reef fishery))))) or (bief history)) %((2f 20th) or (20 20th)) century%22*.