I remember it being said that John's Gospel was created and edited in many stages. How can I search for this in Logos?
Easiest for discussion is John and 'signs gospel'
Also:
The Fourth Gospel and Its Predecessor: From Narrative Source to Present Gospel
Includes a proposed reconstruction (verse by verse) of the stages.
"Searching" for things like that will yield less useful results than first consulting the appropriate sections in your NT introductions/Gospel introductions/commentaries on John. Raymond Brown addresses this well in his commentary on John.