the /serachender command is very nerfed if it does not look inside shulker boxes or bundles. As a lot of player (on my server most) keep stuff in their enderchest inside shulker boxes. It currently is trivial evading the search commands by putting items inside shulkers or bundles.

I suggest a config option or a command parameter -r to search inside items as well.
I am aware that this is more cpu intensive I am fine with this taking longer to search.