Each part of this "Dork" (advanced search string) serves a specific purpose:
Some streaming services carry horror movies, though availability can vary by region. intitle+index+of+mkv+wrong+turn+5+work
Wrong Turn 5: Bloodlines (2012) is the fifth installment in the horror franchise about inbred cannibals in West Virginia. It is not mainstream cinema; it is direct-to-video horror. This is key. Mainstream blockbusters are heavily monitored by anti-piracy bots (like those from the MPAA or automated DMCA crawlers). Lesser-known horror sequels often slip through the cracks, residing on obscure European or Asian file servers for years longer than Avengers: Endgame ever would. Each part of this "Dork" (advanced search string)
The search string you provided is a common "Google Dork" used to find open directories on the internet that might host video files. Specifically, it targets the film . Understanding the Search Syntax This is key