Instead of having the names "Simple raid box of X" and "Raid box of X", rename to -> "Raid box of X (Simple)" and "Raid box of X (Improved)" . Word improved can be adapted of course.
This will change our way of searching NB items. Now we have to fully search the items putting the whole phrase, but this will enable us to search much faster, just by writting "X (Simple)" or "X (Improved)", it will directly pop, the same way we can search the seals just by writting "seal of X".