Perhaps you should try some spelling variations:
union conversations » curious conversations, design conversations, driven conversations
win conversations » when conversations, wine conversation, wins conversation
brief herstory » brief hystory, brief story, brief repository
20th century » 18th century
bief history » brief hystory, brief historic, beruf history
reef history » reeves history, reef fishery
ref history » etf history, tnf history, reform history
2f germany » 2 germany, 20 germany, 21 germany
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) OR (win conversations)) %2f germany %((((((imf history) OR (((reef history) OR (brief history))))) OR (ref history))) OR (((bief history) OR (brief herstory)))) %2f 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (win conversations)) %2f germany %((((((imf history) or (((reef history) or (brief history))))) or (ref history))) or (((bief history) OR (brief herstory)))) %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (win conversations)) %2f germany %((((((imf history) or (((reef history) or (brief history))))) or (ref history))) or (((bief history) OR (brief herstory)))) %2f 20th century%22*.