Explore related content #1 (-“phrase”)long tail seo -"long tail seo"
Even if you’ve turned these up in your initial keyword research, this combination of Google search operators gives you a quick way to cover a lot of variants and potentially relevant content.
While the results will overlap with the previous trick, you can sometimes turn up some interesting side discussions and related topics.
Some operators can’t be used in combination (or at least the results are highly suspicious), so always gut-check what you see.