Hi Charlene,
If you cannot locate the mentioned set, you can purchase the colours separately. Go to any make-up counter (Inglot, MAC, Bobbi Brown etc) and request orange concealer (for dark circles/areas) and green concealer (for red areas, if you tend to get red in the cheeks in summer or if you have red pimples). Alternatively, if your problem areas are not that bad, you can use a normal skin colour concealer and follow with your foundation.