Perhaps you should try some spelling variations:
22christian design » unchristian design, christian designed
ref history » reef history, brief history, bief history
11 germany » 1918 germany, 7 germany, 8 germany
11 german » 1 german

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 design conclusion %((11 germany) OR (11 german)) %ref history %2021 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian design conclusion %((11 germany) or (11 german)) %ref history %2021 ((20th century) OR (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %22christian design conclusion %((11 germany) or (11 german)) %ref history %2021 ((20th century) OR (18th century))%22*.