I believe the solution to that is to not aim for a specific site and use its search; use a regular web search instead and trust that SO and gang make their site

I believe the solution to that is to not aim for a specific site and use its search; use a regular web search instead and trust that SO and gang make their sites indexable. That certainly seems to be the case. I have a particular SO question I often reference in order to link to it in answers and comments; I always just google two words to find it.