Here is an example of a Google dork (advanced search query) that might yield such directories:
Technically speaking, an open directory occurs when a web server is configured to show a list of all files in a folder rather than a styled webpage. For movie lovers, these directories often look like a simple, text-based list of file names—ranging from —acting as a raw, "exclusive" library of content. The Hunt for Exclusive Bollywood Content index of parent directory bollywood movies exclusive