The query includes the TV show title "The Middle."
The phrase "complete series" appears, indicating a full-series set.
The terms are: "The Middle" for the title, "complete series" for completeness, and "dvd" for the media type.
The term "dvd" identifies the media type and "complete series" identifies the set scope.
There are five words: "the", "middle", "complete", "series", and "dvd".