Perhaps you should try some spelling variations:
design conversations » design considerations, design construction, design conclusions
union conversations » driven conversations, invent conversations, second conversations
win conversations » when conversations, ai conversations, wine conversation
20th century » 18th century
ref history » reef history, bief history, imf history
2f germany » 2 germany, 20 germany, 21 germany
2f 20th » 20 20th, 2.2 20th

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 (win conversations))) OR (design conversations)) %2f germany %((brief history) OR (ref history)) %2f 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((((union conversations) OR (win conversations))) or (design conversations)) %2f germany %((brief history) or (ref history)) %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((((union conversations) OR (win conversations))) or (design conversations)) %2f germany %((brief history) or (ref history)) %2f 20th century%22*.