Fuzzy search is cancer. I search for $FOO, click a result, Ctrl-F for $FOO ==> Not found. Many such cases. If there's a way to force DuckDuckGo to actually do what I tell it to, I'd love to hear it.
I thought this problem will disappear upon switching to Kagi, but it suffers from the same disease, albeit to a lesser extent.
I remember reading a Google Search engineer on here explain that the engine just latches on some unrendered text in the HTML code. For example: hidden navbars, prefetch, sitemaps.
I was kinda shocked that Google themselves, having infinite resources, couldn't get the engine to realize which sections gets rendered... so that might have been a good excuse.
Try searching for "$FOO", that's what I usually do in those cases. See https://duckduckgo.com/duckduckgo-help-pages/results/syntax/
I've heard reports that requesting verbatim results via the tbs=li:1 parameter has helped some people postpone entirely giving up on Google.
Personally I've already been on Kagi for a while and am not planning on ever needing to go back.