Hello, Matt
Unfortunately for search in rich texts we use match phrase prefix rule (we return documents that contain the words of a provided text, in the same order as provided)
So in your case successful query would need to be credentials ◆ wordpress - with the omitted diamond.
That is a technical compromise for rich texts only, titles and other stuff is queried more elaborately
I’ll link your feedback to prioritize querying rich texts the same way as titles higher