Perhaps you should try some spelling variations:
curious conversations » serious conversation, courageous conversations, conscious conversations
curious conversion » curious confession, cur's conversion, riots conversion
20th century » 18th century
21 germany » 11 germany, 20 germany, 8 germany
2f history » imf history, etf history, ref history
2 germany » 2 german, 8 germany, 5 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: %christian ((curious conversations) OR (curious conversion)) %((21 germany) OR (((2 germany) OR (7 germany)))) %2f history %2f 20th century%22.
• Adding a wildcard symbol may retrieve word variants: %christian ((curious conversations) or (curious conversion)) %((21 germany) or (((2 germany) or (7 germany)))) %2f history %2f 20th century%22*.