Perhaps you should try some spelling variations:
designed conversations » designed conversation, design conversations, designing conversations
christian designed » christianity designed, christ designed, christian divine
reef history » brief history, reeves history, reef fishery
21 germany » 2.1 germany, 11 germany, 2 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: %christian designed conversations %((7 germany) OR (21 germany)) %reef history %2f 18th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian designed conversations %((7 germany) or (21 germany)) %reef history %2f 18th century%22*.