How can I search my password database?

I have dozens of username/passwords stored in avast password
I need a way to search them, in response to security warnings I receive.
A majority of the entries username are identical (one of the 3 emails I use)

Example 1:
Security warning - your email (name@server.com) and password xxxxxx2345 (the security warning send only the last few characters of the password - for security reason) has been found in a leaked database.

Who do I search for this?

Example 2:
Security warning - your phone number (123 456 7890) has been leaked for account xxxxxxxxx2345.

Here the username is ending in 2345, or it could be that the username is one of my email, but the account number is stored in the notes for an entry in the password database.

Avast Hack-Check: https://www.avast.com/hackcheck

This should help.
https://forum.avast.com/index.php?topic=93544.msg1522154#msg1522154