The idiom is actually faire avancer le schmilblick ("to make the schmilblick move/get ahead", literally) and was used a lot in the TV quiz show where it meant asking another pertinent question that might make it easier to guess the object.
The phrase "faire avancer le schmilblick" is an idiom used in a popular TV quiz show, meaning to ask a follow-up question that helps someone guess the target item more easily.