Usually, such a statute refers to a landlord's storage of items in a location different from the rental unit. That is to say, if the landlord moves the items to a storage locker, or some similar alternative location, such that the apartment can be rented. It sounds like your landlord left your property in the apartment - which, presumably, is a place you, yourself, deemed appropriate and suitable during the time of your residence.
Now, your state may permit some form of action against a landlord who fails to provide adequate protection from the criminal acts of third parties, and if so may try to argue that your landlord failed to meet that duty. But it seems unlikely that you will be able to demonstrate negligence by your landlord in the storage of your items, when in the landlord did not move them from where you left them in your locked and sealed apartment.
Protection against theft is, of course, a good reason to carry renters' insurance, which is usually quite affordable (even if few think to purchase it.)

