Currently, when you search for a song and play it, the next song to be played is the next result in the list of resulsts. But most people searching, for example, for "rockstar" by Post Malone will not be looking to hear "rockstar" by Nickleback and then hear "rockstar" by Hannah Montana, since those are different genres of music.
Updated on 2018-11-20
Your idea was submitted a while ago and unfortunately didn't receive the amount of kudos needed to stay active in the ideas board (100 Kudos per year).
In order to keep the Ideas Exchange clearer I'll close this idea for now, but this doesn't mean Spotify rejected this idea.
If you think this is an idea which needs to be implemented, you're welcome to post it in slightly different again :)
Have a nice day!