Perhaps you should try some spelling variations:
curious conversations » curious conversion, serious conversation, courageous conversations
union conversations » win conversations, design conversations, driven conversations
bief history » brief history, brief hystory, imf history
21 germany » 11 germany, 2 germany, 20 germany

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 (curious conversations)) %21 germany %bief history %2020 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (curious conversations)) %21 germany %bief history %2020 ((20th century) OR (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (curious conversations)) %21 germany %bief history %2020 ((20th century) OR (18th century))%22*.