If you call Expedia on the phone, they should be able to build the same itinerary for you, segment by segment. I have had to do this in the past and it has successfully allowed for the same price via Expedia.

Keep in mind that we - the consumer - dont know / understand the algorithm that sorts the list of possible flights shown to us. Just know that the list is NEVER exhaustive... hence getting on the phone is always a good last choice to find what you need.