Thanks for your question. I will try to help.
The extracts that you have typed do not amount to a break clause allowing a party (whether landlord or tenant) to terminate the lease earlier than the fixed term.
The original extract in your question seems to refer to the ability to terminate the tenant earlier than the fixed term elsewhere in the tenancy, but it does not itself constitute a break clause.
So, unless there is a clear break clause anywhere else in the tenancy which you have missed then the tenancy cannot be terminated any earlier than the fixed term.
The original extract deals with a refund IF the tenancy is terminate earlier than the fixed term “in accordance with the agreement”. If the tenancy does not contain a break clause then the extract is redundant, because it does not in and of itself give the right to either party to terminate the tenancy earlier than the fixed term.
Slightly sloppy drafting, but no more than that.
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