Anyone else noticed the mildly annoying way that when you search google for something 'vegan', sites with 'vegetarian' in them will also be presented in the results even if those sites don't mention 'vegan'. Because google obviously lumps the two together.
Of course you could type '-vegetarian' to exclude from the results any sites that include the word 'vegetarian'. But that also excludes sites that include both the words 'vegetarian' and 'vegan'.
Try it, you'll see.