They had to have a moving truck for you stuff. They would have also been casing the joint to look for a pattern of your daily comings and goings. Did you notice any vehicles parked in the street that aren't there now? Do you have people that you know, come to your house without calling first? Is there an easy way for a neighbor to carry something out of the back door and take it to their house with ease and shade? You should question and warn your neighbors...
I got robbed too but i didn't have much. He took a playstation 2 and some games. He was looking for the weed but the idiot didn't look under the chair cushion in the bedroom. He tossed everything except that one chair and he would have gotten 2 pounds of dank. It was someone that my roommate meet in the neighborhood and he use to come over without calling or anything. A few times he would just open the door w/o knocking. Needless to say, he got dogs called on him and wasn't able to enjoy his new playstation for a while.