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