Perhaps you should try some spelling variations:
christian purity » christian unity, christian charity, christian jurists
christian party » christian parts, christian part, christian art
brief herstory » brief history, brief hystory, brief story
20th century » 18th century
2.1 germany » 21 germany, 2017 germany, 9.13 germany
etf history » reef history, imf history, ref history
2f germany » 2 germany, 20 germany, 21 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 party) OR (christian purity)) conversations %((2f germany) OR (2.1 germany)) %((etf history) OR (brief herstory)) %2f 20th century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((christian party) OR (christian purity)) conversations %((2f germany) or (2.1 germany)) %((etf history) or (brief herstory)) %2f 20th century%22".
• Adding a wildcard symbol may retrieve word variants: %((christian party) OR (christian purity)) conversations %((2f germany) or (2.1 germany)) %((etf history) or (brief herstory)) %2f 20th century%22*.