problem/solution cold case archive

When I’m searching for a solution, I find lots of really old problems from 2014 etc, with either no responses or answers but no solution.
I wish there was a way of flagging them into a cold case archive so it could be filtered out of searches. It makes searching a frustrating waste of time, to read a bunch of responses from people asking the same thing every year.

Unlike answerhub there’s no way to indicate that a thread has an answer or not, so there’s no way to filter it that way.