Is there really no search function to find content in a Mural which is NOT open?

Pretty much as the title: If I know I have a text box in one of many Murals. but I don't know which Mural it is in, then of course I cannot go and open the Mural and then use the "Search inside this Mural" function. Because I don't know which one of many Mural I should open.

I can remember a word from the text box. Is there really no way to search for content in Murals which are not open?

If this is the case, will such a function come at some stage, and when?

Of course, information security is crucial in implementing such a feature, so users or admins don't end up seeing content which is not theirs.