How can I see every user's operation?

[zumimode]

Hi
I want to see every user's operation like these
ex. Marry delete data source id 1173 name cisco 2950 cpu on 02/07/2014 08:55:01 AM
Harry add device hostname 192.168.0.1 on 02/08/2014 07:44:13 PM
where can I view these logs? (user_log only show user login log but no other operation)

Thanks for your early reply.

Best Regards,zumimode