searching notes field

I was testing to see if my newly entered note would come up in my search results when searching “find by note text” and I see that it leaves out notes that are “Multi-part.” This is problematic since many of our notes are multi-part, especially Biographical/Historical notes. We do this because of field length and for formatting the notes (into multiple paragraphs).

Are we doing something incorrectly, or is this a known issue?