I have psoriosis on my elbows. My doctor perceived triaminicilone cream. It doesn't seem to be working. What else may be effective?

Injections,laser. Treatment options include other creams such as tazorac, (tazarotene) injections of dilute steroids into the lesions, or excimer laser to cause psoriasis to go into remission.
Look for the cause. Psoriasis frequently has a cause - food allergies and gut inflammation that leaks into the body stimulates the immune system chronically as well as nutritional deficiencies. Go to a4m.Com doc locator and find a local functional medicine doc who can help you evaluate this and find a solution or you'll be tied to topical steroids or worse.