What was the location for the match held on April 11, 2007, which ended with a score of 0-0?
CREATE TABLE "asian_champions_league_appearances" (
  "date" text,
  "venue" text,
  "opponent" text,
  "score" text,
  "result" text
);
SELECT "venue" FROM "asian_champions_league_appearances" WHERE "score"='0-0' AND "date"='april 11, 2007';