PROBLEM
Live search limits the results to the top 100 of 1000 Most Recent Records found.
CAUSE
This is working as intended, the live search function is used to show a snippet of compromised accounts that you can show to your interested customer or possible future customer. If they want all compromises, they will need to be added as a monitored domain.
RESOLUTION
Create a new org, or in an existing org add the domain as a monitored domain and you will be able to see all the compromises for the domain.