> "Punctuation is sometimes seen as spaces. Our systems see some punctuation as spaces, which impacts quoted searches. For example, a search for [“don’t doesn’t”] tells our systems to find content that contains all these letters in this order: "don t doesn t"

Others have pointed this bit out, but I'd like to ask specifically: How do you search for special characters?

I recently came across some R code that used %||% and you cannot search for this. As in, you cannot search the internet for this at all.

Google, DuckDuckGo, Bing, Yahoo, all of them will ignore special characters. Even Github search will strip out the special characters leaving you to search for nothing.