How to borrow chords from B major scale in the Key of C (without using search tool?)

So far the only chords I can borrow are from the relative keys of C, and the search tool sometimes doesn’t work for some reason “no results found”. I have seen people say that you can borrow supermodally but those post are from Hookpad 1 era. I am stuck in a end end. Can anyone help?

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Side slipping is basically borrowing from a scale a semitone away. It isn’t implemented. Please chime in on my feature request if it sounds like what you’re looking for!