Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design conclusions
union conversations » win conversations, driven conversations, invent conversations
20th century » 18th century
2017 germany » 20 germany, 17 germany, 2006 germany
9.16 germany » 9.13 germany, 9.15 germany, 2.1 germany
9.14 germany » 9.13 germany, 9.15 germany, 8.4 germany
2f history » 2.1 history, imf history, etf history
21 germany » 2.1 germany, 11 germany, 2 germany
90 20th » 20 20th, 94 20th, 1990 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 (design conversations)) %((21 germany) OR (((((9.14 germany) OR (9.16 germany))) OR (2017 germany)))) %2f history %90 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) or (design conversations)) %((21 germany) or (((((9.14 germany) OR (9.16 germany))) or (2017 germany)))) %2f history %90 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conversations)) %((21 germany) or (((((9.14 germany) OR (9.16 germany))) or (2017 germany)))) %2f history %90 20th century%22*.