Also - doing a Google site search on stacker.news gives better results than a stacker.news search. Right now on stacker.news, the multi-word search doesn't return the right results.
And for privacy, you can do this in an alternative search engine, with a VPN.
In Google search, you can do something like this:
site:stacker.news germany nuclear
...and get the best results, with both search terms. You search like this:
site:stacker.news "nuclear plants"
...if you want to search a phrase. At this point, I don't think it's possible using the stacker.news search.