I developed a cold and now I have a sore throat and my voice is hoarse and hurts to talk. Had tea, soup and logenzes. What else can I do for it?

PROBABLY VIRAL URI. You probably have a viral upper respiratory infection and all you need is symptomatic treatment like you are doing, but if it does not get better or you develop other symptoms like high fever, cough with greenish yellow expectoration etc, than consult your doctor for check up.