How to retrieve deleted or archived jobs

Experts,

I am facing one issue , Here in my system I can check log of last one month only for batch jobs in SM37.

I checked with basis team , they told me that jobs are deleted or archived from system which are more than one month old.

I checked different tables like TBTCO, TBTCP etc, All tables have information for last one month only.

I want to know is there any process to retrieve these jobs?

Need your expert solutions.

Thanks in Advance.