Perhaps you should try some spelling variations:
unity conversations » union conversations, unit conversions, party conversations
christian unity » christian union, christian laity, christian divinity
20th century » 18th century
21 germany » 2.1 germany, 2 germany, 20 germany
11 germany » 11 german, 1918 germany, 7 germany
2f 20th » 20 20th, 2.2 20th

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian unity conversations %((21 germany) OR (11 germany)) %brief history %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian unity conversations %((21 germany) OR (11 germany)) %brief history %2f 20th century%22*.