Let's talk about the ~ (it's called the tilde key on your keyboard)
When you use the ~ (tilde) operator before a word when you search, Google will bold the words that it finds "synonymous". When you use the - (minus) operator, it subtracts that word from the results. The bolded words that are left are perfect for our link diversification project and hopefully numerous enough to be useful. If you stick only with what Google says, you'll certainly limit yourself to a poorer quality finished product. However, I doubt anyone will argue that Google isn't the authority for SEO based LSI, so we'll start there.
I have a money phrase "fluffy bunny slippers" and I'm ready to diversify. After some Google hacking I've come up with: