Because your filter only says "show me all software where the name contains '365'".
Where
tblSoftwareUni.softwareName Like '%365%'
If you want to exclude Veeam Backup, you need to add that as a filter.
Where
tblSoftwareUni.softwareName Like '%365%'
AND tblSoftwareUni.softwareName NOT LIKE 'Veeam Backup%'