Perhaps you should try some spelling variations:
22christian union » christian unity, christian upon
beruf history » bern history, berlin history, reef history
20th century » 18th century
tnf history » etf history, ref history, motif history
21 germany » 2.1 germany, 11 germany, 2 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) OR (christian union)) conversations %21 germany %((((beruf history) OR (tnf history))) OR (((imf history) OR (brief history)))) %2f 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22christian union) OR (christian union)) conversations %21 germany %((((beruf history) or (tnf history))) or (((imf history) or (brief history)))) %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %((22christian union) OR (christian union)) conversations %21 germany %((((beruf history) or (tnf history))) or (((imf history) or (brief history)))) %2f 20th century%22*.