Lost iPhone

Hello,

yesterday at night somebody stole me my iPhone 5.

After few hours when i came back home i used my mac to search for my iphone but it wasnt on internet so i couldnt find it. (used find my iphone app)

As i m not using password, someone used in the morning wifi on my iPhone so i could see where it is and as i set up Lost mode, iPhone was blocked. So i cant see the iPhone anymore because wifi was off already.

I went to Police and searched by myself near the place iPhone was used on wifi but i coldnt find it.

My iPhone is offline now, so what can i do now???