How can it truly be said they were "found",when everybody has know where they are ever since the battle ended?
It ain't like they were going anywhere.
I don't know if this is still true or not,but there were still dead Japanese soldiers in caves on Okinawa in the late 1960's. There is even supposed to be a underground submarine base in a cavern under the island that was sealed off with explosives on the top where crew and supplies entered,and never entered since it was sealed off.
There was even one Japanese soldier still living there in the 60's that had never surrendered,and was living in a cave somewhere. I never saw him,but talked with some Okinawan's that had seen and talked with him,and who sometimes left food for him near a certain bus stop. He wasn't bothering anyone,so nobody really cared.
The IPA and Navy was all over Asia from the 30's to 1945,so I suspect there were some IJA soldiers still living free and unsurrendered all over Asia.