Perhaps you should try some spelling variations:
union conversations » design conversations, driven conversations, invent conversations
win conversations » when conversations, ai conversations, ip conversations
9.13 germany » 9.14 germany, 9.15 germany, 9.16 germany
ref history » reef history, brief history, bief history
2.1 germany » 2017 germany, 9.14 germany, 9.15 germany
11 germany » 11 german, 1918 germany, 7 germany
21 germany » 2 germany, 20 germany, 7 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 (win conversations)) %((((21 germany) OR (11 germany))) OR (((2.1 germany) OR (9.13 germany)))) %ref 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 (win conversations)) %((((21 germany) OR (11 germany))) or (((2.1 germany) or (9.13 germany)))) %ref history %2020 ((20th century) or (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (win conversations)) %((((21 germany) OR (11 germany))) or (((2.1 germany) or (9.13 germany)))) %ref history %2020 ((20th century) or (18th century))%22*.