If i have many different long tail keywords that are extremely similar only one or two words off should I write multiple articles for each of them on one site? For example: best cleaning products best cleaner products what is the best cleaning product These all have different search amounts. Should I write separate articles for all of these? Is there such a thing as too many keywords or too similar on a site that google will have an issue with? This may be a dumb question but I just want to cover all my basses.