Perhaps you should try some spelling variations:
spoken conversations » spoken conversation, open conversations, oboen conversations
christian spoken » christian scorn, christian shore, christian steven
brief hystory » brief history, brief herstory, brief story
bief history » brief history, imf history, ref history
20th century » 18th century
reef history » brief history, reeves history, reef fishery
etf history » imf history, ref history, tnf history
20 germany » 2 germany, 7 germany, 8 germany
2f germany » 2 germany, 21 germany, 25 germany
20 20th » 90 20th, 2019 20th, 2020 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 spoken conversations %((2f germany) OR (20 germany)) %((((etf history) OR (reef history))) OR (((bief history) OR (brief hystory)))) %20 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian spoken conversations %((2f germany) OR (20 germany)) %((((etf history) or (reef history))) or (((bief history) or (brief hystory)))) %20 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %christian spoken conversations %((2f germany) OR (20 germany)) %((((etf history) or (reef history))) or (((bief history) or (brief hystory)))) %20 20th century%22*.