The point of sci-hub is that it fetches specific articles for you, not to be a search engine. Find an article you want - for example, the PolderCast paper[0] - then enter a link or the DOI for that article, and it'll find the paper most of the time.
Now that makes sense. Thanks. It said I could enter a search string, so that threw me off.
Could you advise any good resource to discover interesting articles?
Unfortunately not, I tend to find something close to what I want via Google and then find papers that it references, and papers that reference it. Review articles are useful, as are benchmark comparisons that you find in some papers.