: Most specific archives like this are hosted on forums, image boards, or private clouds. The "piece" you are looking for is almost always listed in the same thread or folder where you found the main link.
If you are looking for a (e.g., .r01, .part2.rar) or a password to extract it, here is how you can find what you need:
If you can tell me or what specific error message you're getting, I can give you more exact help.