That's what it does. If you search for "witcher" from a Skyrim SE page you get content from Skyrim SE (plus a list of games at the top if you are on "all content"). If you've set "mods" as your default search, you get Skyrim SE mods containing the word "witcher". If you are set to "all content" then you get six games related to "witcher", a bunch of Skyrim SE mods related to "witcher", some Skyrim SE Collections related to "witcher", some Skyrim SE images related to "witcher" and some members related to "witcher".
If you're not getting that then your page is broken and you should be investigating why it's broken.