messages?$filter=subject eq 'xx'&$orderby=subject,receivedDateTime desc not work

Question

when I filter email with subject, sometimes it worked well, but some email subject not work.

actually those email subject are similar, for example 'aaa-bbb-ccc' is work but 'aaa-bbb-ddd' not work.

but I can search out those email by https://graph.microsoft.com/v1.0/me/messages