You should try Bing again. Bing doesn't mess with your query terms as much as google does. If you aren't a zoomer typing out whole sentences into the search bar, the fact that Bing doesn't substitute your jargon for more general terms will help with spending less time in the search results.

I just got tired of iterative refining not working as it used to in the past. I once got results for databases when searching for decibels (despite spelling it out in full), so it isn't just a matter of semantically related terms.

The rewriting is just braindead and the ranking algorithm falls for generated content way too easily. Google shouldn't be trying to teach me DHCP when I am clearly trying to recall a config item, but then it gets worse when you read the infobox and realize that it's written at a toddler level of comprehension.

This is with the caveat that all search engines rely on some level of personalization, so you might be able to get good results on google if they deem you worthy.

Why don't you like diversity, in this case diversity of search engines? Bing may have its problems but so does Google, the way to handle this is to either use many different engines or to use a meta-search engine like Searx. The latter is far easier so it is what I do. Just relying on a single source makes you an easy target for those who control that source.