Perhaps you should try some spelling variations:
designed conversations » design conversations, designing conversations, design conversation
designed conversation » design conversation, design conversations, designing conversations
ref history » reef history, brief history, bief history
21 germany » 2.1 germany, 11 germany, 2 germany
2021 18th » 2021 13th, 2021 16th, 2021 6th

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian ((designed conversations) OR (designed conversation)) %21 germany %ref history %2021 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian ((designed conversations) OR (designed conversation)) %21 germany %ref history %2021 18th century%22*.