Perhaps you should try some spelling variations:
design conversations » design considerations, design conclusions, design consideration
20th century » 18th century
2f germany » 2 germany, 20 germany, 21 germany
2f history » etf history, ref history, tnf history
20 20th » 90 20th, 2019 20th, 2020 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: %christian ((design conversations) OR (design construction)) %((2f germany) OR (7 germany)) %((2f history) OR (((imf history) OR (brief history)))) %20 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian ((design conversations) or (design construction)) %((2f germany) or (7 germany)) %((2f history) or (((imf history) OR (brief history)))) %20 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian ((design conversations) or (design construction)) %((2f germany) or (7 germany)) %((2f history) or (((imf history) OR (brief history)))) %20 20th century%22*.