Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
upon conversations » open conversations, spoken conversations, human conversations
brief hystory » brief herstory, brief story, brief historic
bief history » imf history, reef history, ref history
21 germany » 11 germany, 2 germany, 20 germany

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: %christian ((upon conversations) OR (union conversations)) %21 germany %((brief history) OR (((bief history) OR (brief hystory)))) %2.2 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian ((upon conversations) or (union conversations)) %21 germany %((brief history) or (((bief history) OR (brief hystory)))) %2.2 ((20th century) or (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %christian ((upon conversations) or (union conversations)) %21 germany %((brief history) or (((bief history) OR (brief hystory)))) %2.2 ((20th century) or (18th century))%22*.