Vegetarian Chili (adapted from The Joy of Cooking)

2 Tbsp. olive oil
1 cup each, chopped: carrots, red bell peppers, green bell peppers, onions
2 cloves garlic, minced
2 green chili peppers, seeded and chopped
1 Tbsp. each: chili powder, ground cumin, ground coriander
1 28-oz. can plum tomatoes with juice, chopped
1 16-oz. can each, rinsed and drained: red kidney beans, cannellini beans, black beans
1 cup whole kernel corn
1 cup tomato juice
Salt to taste