I guess "coyeo" might be "jo yeo" meang "저요?" and "cha ge yo (차게요)" would be "please make it cold" like beverages or coffee.^^ Here is what I thought.^^ (In a cafe) A: 커피 어떻게 해드릴까요? How do you like your coffee? B: 저요? 차게요.(차게 해주세요) Me? Ah, please make it cold. ^________^