Actually, it's more like "All of Deceptions" or "Every Deceptions".
Well, I actually understand the latin language. To an extent. My brother does, too. We both got the translation of Vanity of Vanities. Omnia and Vanitas both mean Vanity, but when you put them together, it translates to Vanity of Vanities. It would be "all of" or "every" if the word were Omni, not Omnia.