Steve Morse has created another of his wonderful ONE STEP search engines -- this time it's for the 1911 Canadian census online at Ancestry.com
Steve's search engine searches many fields, not just the surname. As well the district field is a dropdown list that is populated when you select the province. So there is no need for a separate district name and district number field as Ancestry has.
Also there is no chance of mistyping or misspelling the district name when it comes for a dropdown list.
You may want to try this new tool from Steve!