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The same words, written as one word or split into two words, will differ in meaning. So you need to know which word you really want.
Any more: something additional or further
Example: I don’t want any more cake.
Anymore: any longer, nowadays
Example: Harry doesn’t travel anymore.
Anyone: anybody
Example: Anyone can learn to cook but few can learn to cook well.
Any one: any single member of a group of people or things
Example: Can any one of you tell me the answer to my question?
Everyone: everybody
Example: Everyone on the list has contributed to the ASPCA.
Every one: each one
Example: I wish I could buy every one of those puppies.
Everybody: everyone
Example: Everybody is working harder today than ten years ago.
Every body: each body
Example: Every body requires protein, vitamins, and minerals.