Perhaps you should try some spelling variations:
driven conversations » driven conversational, live conversations, lives conversations
union conversations » win conversations, design conversations, invent conversations
reef history » brief history, reeves history, reef fishery
bief history » brief history, brief hystory, imf history
20th century » 18th century
ref history » brief history, imf history, etf history
2f germany » 2 germany, 20 germany, 21 germany
90 20th » 20 20th, 94 20th, 1990 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 (driven conversations)) %2f germany %((((reef history) OR (ref history))) OR (bief history)) %90 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22christian ((union conversations) OR (driven conversations)) %2f germany %((((reef history) or (ref history))) or (bief history)) %90 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %22christian ((union conversations) OR (driven conversations)) %2f germany %((((reef history) or (ref history))) or (bief history)) %90 20th century%22*.