Not all national bodies supply a list of all players on their files.
The Australian Bridge Federation have a file of players that is available to any person wanting the limited data.
The ABF supply the abf.fil file. To use that file, go to the file/open menu item and using the open dialogue locate the file. The ASE Scorer Version 9 then loads and converts that file to an abf.gdb file, making it available to find players not found on the club masterfile.
You can also locate players using this screen, either through a player number search or name search.