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