Also look for anything about notice

The sentence quoted refers to "terms and conditions herein set forth." So you need to read on and see what these terms are. Usually there should be something about early termination penalty and notice requirement. For example, the tenant is required to give written notice 30 days before moving out.

Are you dealing with a leasing office or a private party? If it's a private party and the terms are not specified, you can negotiate with the other side. Keep in mind that you are the tenant and are not bound by anything not in the lease terms.