Perhaps you should try some spelling variations:
upon conversations » union conversations, open conversations, spoken conversations
christians upon » christians among, christians from, christians being
9.13 germany » 9.14 germany, 9.15 germany, 9.16 germany
bief history » brief history, brief hystory, imf history
ref history » reef history, brief history, imf history
5th century » 15th century, 6th century, 18th century
2020 5th » 2020 16th

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: %christians upon conversations %9.13 germany %((ref history) OR (bief history)) %2020 5th century%22.
• Adding a wildcard symbol may retrieve word variants: %christians upon conversations %9.13 germany %((ref history) or (bief history)) %2020 5th century%22*.