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Hi! There are some terms that you just won't be able to rank for with a single page. It might be because of the competition or google might see the keyword as not as relevant so you'll be limited. I would look at it at a case by case thing. It doesnt mean you have to create a new page each time. It's just an option and you can do tests for it if you want. If it ranks better (and faster) then you have a winner. If it's just an extra maintenance cost and doesnt give results, you might want to just scrap it altogether and redirect the url to the old, improved page that was already performing. Hope you are having a great week!