If I want to improve a question by making it easier to find in either SE search or Google, how would I do that?
The motivation behind this is that there can be multiple very different sounding problems that all have the same solution, so people with one of those should be able to find the question asking for another one of them.
There are some possibilities that come to mind, but they all aren't really great:
Purposefully ask a new question asking for the other thing and flag it myself as a duplicate of the original question.
Disadvantage: Intentional duplicates are bad.
Edit the original question to include some tag words that will make people find it.
Disadvantage: Random words in the question that have nothing to do with the main question.
Edit the original question to contain two questions in one.
Disadvantage: Only one question per question allowed.
Make my own FAQ with the same answer.
Disadvantage: Updates to the answer don't get transferred. Also I would "steal" reputation from the original asker and answerer if people find my question and upvote it or the answer.
So what should I do instead?