Perhaps you should try some spelling variations:
when conversations » open conversations, win conversations, agent conversations
christians when » christians who, christians he, christians men
2017 germany » 20 germany, 17 germany, 2006 germany
bief history » brief history, brief hystory, imf history
8 germany » 7 germany, 1918 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: %christians when conversations %((8 germany) OR (2017 germany)) %bief history %2020 ((20th century) OR (18th century))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christians when conversations %((8 germany) or (2017 germany)) %bief history %2020 ((20th century) OR (18th century))%22".
• Adding a wildcard symbol may retrieve word variants: %christians when conversations %((8 germany) or (2017 germany)) %bief history %2020 ((20th century) OR (18th century))%22*.