Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christianity upon » christianity among, christianity from, christians upon
brief hystory » brief history, brief herstory, bief history
ref history » reef history, brief history, bief history
brief story » brief history, brief study
21 germany » 2.1 germany, 11 germany, 2 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: %christianity upon conversations %21 germany %((ref history) OR (((brief hystory) OR (brief story)))) %2.2 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christianity upon conversations %21 germany %((ref history) or (((brief hystory) OR (brief story)))) %2.2 ((20th century) or (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %christianity upon conversations %21 germany %((ref history) or (((brief hystory) OR (brief story)))) %2.2 ((20th century) or (18th century))%22*.