Google censors aggressively. Try:
Do not trust a file just because the folder name includes "verified." Bad actors often label malware as "verified." Here is how to self-verify: index of ps3 iso verified
The Internet Archive hosts thousands of PS3 ISOs under the "Console Living Room" and "Redump" collections. Search for "PS3 ISO" site:archive.org. While not a raw index of page, the structure is similar. These are legal to download only if you own the original disc. Google censors aggressively