Before you try any complex methods, test these standard passwords used across warez and sharing forums (including Downmienphi archives):
Downmienphi has changed domains over time. Try searching for the exact filename (without "password") on: i--- Downmienphi Password
Do not run unknown .exe files just because you extracted them with a found password. Warez archives frequently contain malware, keyloggers, or cryptocurrency miners. Always: Before you try any complex methods, test these
If none of the above work, you have a few options: Before you try any complex methods
A: No. Passwords change per uploader and per file. However, community forums like VietStar or VN-Zoom sometimes maintain threads with recent passwords.