Do your birds have Coryza? I thought they had Fowl Pox.
You've tried OxymavB (Oxytetracycline hydrochloride) and Triple C (Chlortetracycline Hydrochloride).
https://www.backyardchickens.com/threads/fowl-pox….1477381/
Infectious Coryza is traditionally treated with Sulfa Antibiotics which can be paired with another antibiotic like Tylosin or one of the "cyclines". IF you suspect Coryza, then I suggest you ask your vet for a script or look for SMZ-TMP.
As for the Super Greens, you'll have to figure that one out yourself

It's a product out of Thailand. What combination of antibiotics used, I wouldn't have a clue.