Perhaps you should try some spelling variations:
union conversations » win conversations, design conversations, driven conversations
unity conversations » unit conversions, party conversations, city conversation
21 germany » 2 germany, 20 germany, 7 germany
11 germany » 11 german, 1918 germany, 7 germany
2021 20th » 2021 24th, 2021 10th, 2023 20th
2020 20th » 2020 16th, 2020 2021, 2020 4th
2.2 20th » 2023 20th, 2022 20th, 2012 20th
2020 5th » 2020 16th

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 ((unity conversations) OR (union conversations)) %((21 germany) OR (11 germany)) %brief history %((((2.2 20th) OR (2021 20th))) OR (((2020 20th) OR (2020 5th)))) century%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%christian ((unity conversations) OR (union conversations)) %((21 germany) or (11 germany)) %brief history %((((2.2 20th) or (2021 20th))) or (((2020 20th) or (2020 5th)))) century%22".
• Adding a wildcard symbol may retrieve word variants: %christian ((unity conversations) OR (union conversations)) %((21 germany) or (11 germany)) %brief history %((((2.2 20th) or (2021 20th))) or (((2020 20th) or (2020 5th)))) century%22*.