Background: I am interested in local and family history. This means, for example, that I often search for places or people who have left hardly any traces online. Google has the benefit of results from Google Books, what makes things better, but this is not the issue here. My issue is that I don’t understand why Kagi doesn’t show some relevant results to my query that are indexed by Google.
Recently I searched for a man named "Heinrich Langenhagen", who run a bookshop and was a small publisher in the first half of the 20th century. There won’t be any biography online, but some helpful clues.
Kagi (https://kagi.com/search?q=%22Heinrich+Langenhagen%22) starts with a car-dealership from a on a low-quality directory site but then has some results that are loosely connected to the person of interest. There are 11 results in total.
Doing the same search on Google (https://www.google.com/search?q=%22Heinrich+Langenhagen%22#ip=1), there are about 45 results. For reasons unknown to me, Kagi omits the following results (with relevant content and from unquestionable domains):
zvab.com (large trading platform for antiquarian books, belongs to Amazon)
booklooker.de (platform for antiquarian books)
billiongraves.com (major genealogy site)
ancestry.com (dito)
familysearch.org (dito)
myheritage.com (dito)
archiv.sachsen.de (State archive of a German federal state)
arcinsys.niedersachsen.de (dito)
digital.slub-dresden.de (major German university library)
kalliope-verbund.info (German library network)
Expected: No omission of results with relevant content and from unquestionable domains.
