In your SEO Guide you said this "Your best bet is to include each of the exact keyword phrases that you’re trying to rank for". Your answer doesn't sound definitive. Is there any data to back this up or is it just opinion?
For example would "iPhone 6 with iPhone 6 Charger" rank better than "iPhone 6 with charger" if your keywords were "iPhone 6" and "iPhone 6 Charger"?
My other question is about keywords. Is there a way or service you know of that would tell us exactly what keywords customers are entering to find our product or similar product?