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

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: %22christian design conversations %11 germany %ref history %2.2 ((20th century) OR (18th century))%22.
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