Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design conclusions
22christian design » unchristian design, christian designed
1918 germany » 8 germany
ref history » reef history, brief history, bief history
21 germany » 2 germany, 20 germany, 7 germany
11 germany » 11 german, 7 germany, 8 germany

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 design conversations %((21 germany) OR (((11 germany) OR (1918 germany)))) %ref history %2021 ((20th century) OR (18th century))%22*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian design conversations %((21 germany) or (((11 germany) or (1918 germany)))) %ref history %2021 ((20th century) OR (18th century))%22*".