Write to me which document does not have optical character recognition (OCR).

The two things are the same... If a document has more than zero words in it, then it has searchable text, and vice versa.

To identify that you would need to use a script. You can run it as a part of an Action (via Tools - Action Wizard) to generate a list of all the files that don't have any searchable text in them.

You can use the following code for that:

var numWords = 0;
for (var p=0; p<this.numPages; p++) {
	var numWords+=this.getPageNumWords(p);
	if (numWords>0) break;
}
if (numWords==0) console.println(this.path);

When the Action finishes executing press Ctrl+J and you'll see a list of all the file paths without any text in them from those you scanned.

Edited: Fixed small mistake in the code