Perhaps you should try some spelling variations:
when conversations » open conversations, win conversations, chain conversations
etf history » reef history, imf history, ref history
21 germany » 11 germany, 2 germany, 20 germany
11 german » 1 german
agent » agents

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) OR (agent conversations)) %((21 germany) OR (11 german)) %etf history %2f 18th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christians ((when conversations) OR (agent conversations)) %((21 germany) or (11 german)) %etf history %2f 18th century%22".
• Adding a wildcard symbol may retrieve word variants: %christians ((when conversations) OR (agent conversations)) %((21 germany) or (11 german)) %etf history %2f 18th century%22*.