I am looking to use search to see whether many downvoted answers with negative score still remain undeleted, or not. What search entry should I use to get a list of all answers ever posted on IPS, arranged by votes? I need to exclude all questions and deleted answers. I would prefer a search that also allows me to read the actual negative-score answers that remain undeleted, rather than statistics alone. Please also try to link to standard resources on how to use such very specific searches on Stack Exchange.
Most of the basic search help is easily accessible in the advanced search tips bar when you're on the search page:
There's more detailed help on the search help page.
For your specific interest, you'll want something like:
And then click on the "votes" sort order to get this.
You can't see deleted answers, other than your own (if you have 2K+ reputation), but they only come up when you specifically search for them. The query will default to active posts only unless you specify deleted ones.