Well, there is no possible way for this to do from the administrator area. It’s only possible by editing the search code. I’m not sure how experienced you are in wordpress programming, but are you using those urls elsewhere also? Are they coming from a plugin? Is there maybe a wordpress filter that is applied elsewhere (in plugin, template) that creates those kinds of urls? Is this kind of url redirecting to the desired page?
Let me know if you know anything about these, and we will figure out a solution.Best,
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