Heat oil in a large saucepan over medium heat. Add onion; cook until begins to soften, about 4 minutes. Add garlic, chili powder, cumin and oregano; cook, stirring, for 1 minute.
Stir in water, turkey, diced tomatoes, tomato soup, salsa, bouillon cubes, and parsley. Bring to a boil, then reduce heat, and simmer until bouillon cubes dissolve, 5 minutes. Stir in corn, black beans, ½ cup sour cream, and ¼ cup cilantro; simmer 20 to 30 minutes.
Serve soup with crushed tortilla chips, cheese, green onion, ½ cup cilantro, and ½ cup sour cream.
