You can't. The only way you can track a device is to have had a tracking program on it. Or be hooked into an online tracking system. Or both. Without those, the laptop is gone, unless you run into someone who has it, or see it for sale somewhere online.
Now days it is required that the seller make note of the serial number if purchased from a store. Contact the store and get the serial number from them. Your only recourse is to bring the info and sales receipt to the police in hopes that it is turned in or seized. Other than this follow the other suggestion provided above.