Perhaps you should try some spelling variations:
unity conversations » union conversations, unit conversions, party conversations
christian unity » christian union, christian laity, christian divinity
2.1 germany » 21 germany, 2017 germany, 9.13 germany
2023 20th » 2023 10th, 2020 20th, 2023 24th
2023 26th » 2023 6th, 2023 5th, 2023 7th

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian unity conversations %2.1 germany %brief history %((2023 20th) OR (2023 26th)) century%22".
• Adding a wildcard symbol may retrieve word variants: %christian unity conversations %2.1 germany %brief history %((2023 20th) OR (2023 26th)) century%22*.