Understanding Work Order System Status'

SAP newbie here. I would like to be able to understand more about system status'. I am trying to understand how they are generated and what the order means. Is there any significance to the order of system status' (i.e. CNF PRT TECO <- is there significance in the order of these system status')? Also, if I wanted to find all of the work orders with a system status that begins with CNF/PCNF how would I do that? I don't see that function in our SAP screen for IW49