Perhaps you should try some spelling variations:
union conversations » curious conversations, design conversations, driven conversations
when conversations » open conversations, agent conversations, chain conversations
win conversations » wine conversation, wins conversation, chain conversations
20th century » 18th century
reef history » brief history, reeves history, reef fishery
etf history » imf history, ref history, tnf history
21 germany » 2.1 germany, 11 germany, 2 germany
2f germany » 2 germany, 20 germany, 25 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) OR (when conversations)))) %((2f germany) OR (21 germany)) %((etf history) OR (reef history)) %2f 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (((win conversations) OR (when conversations)))) %((2f germany) or (21 germany)) %((etf history) or (reef history)) %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (((win conversations) OR (when conversations)))) %((2f germany) or (21 germany)) %((etf history) or (reef history)) %2f 20th century%22*.