Oh my God that is my worst nightmare! I am so very sorry this happened to you!! JHow awful. Such horrible people.. and the nerve to break into someone's house that have so many dogs (would have assumed that most would be deterred by all the barking?).
I would be putting up posters everywhere (streets, supermarkets, communiy centers etc) and posting on facebook, instagram, all the social media stuff. Hope you will be able to find him...
And hope your Yorkie is doing okay.