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, 1/2 cup sour cream, and 1/4 cup cilantro; simmer 20 to 30 minutes.

Serve soup with crushed tortilla chips, cheese, green onion, 1/2 cup cilantro, and 1/2 cup sour cream.