When I write a new email and type the first letters of a name I get automatically matches. Please make this working too, when I write a middle part of a name.

For Example:
I have "Justin Johnny Myles" as contact.

He will be found, writing a new email, when I type "ju" or "jo" or "my" BUT I'd like to find him too, when I type "tin" or "ohn"....

Maybe it does not make sense for the moment but when I use German names with similar nameparts the feature makes sense.