Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design conclusions
union conversations » win conversations, driven conversations, invent conversations
reef history » brief history, reeves history, reef fishery
10th century » 18th century, 20th century, 19th century
ref history » brief history, bief history, imf history
21 germany » 2.1 germany, 11 germany, 2 germany
2013 10th » 2015 10th, 2013 8th

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 ((union conversations) OR (design conversations)) %21 germany %((ref history) OR (reef history)) %2013 10th century%22.
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) or (design conversations)) %21 germany %((ref history) or (reef history)) %2013 10th century%22*.