Ask about special characters in your article title

As the title , I have come across cases like red marks circled in the picture, How can insert special characters into the title ?
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kakacondoqn said:

As the title , I have come across cases like red marks circled in the picture, How can insert special characters into the title ?
View attachment 65402

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That are special ASCII symbols, https://en.wikipedia.org/wiki/ASCII.

You can just copy and paste them to the meta title of your site, and they will appear as well in the search results of google (after a few days).