Any one / Anyone
Any one refers to a particular component of a group:
"Take any one of those sandwiches." lấy một [trong những] cái [bánh] sandwiches. Ðể ý chữ of.
Anyone refers to an indeterminate person:
"Take anyone to the dance, see what I care!" Dẫn bất cứ ai đi nhẩy đầm [đi], coi tôi có cần/sợ [không].
The same distinction applies to "every one" and "everyone."