"We are looking for some shoes for the party."
Translation:Buscamos unos zapatos para la fiesta.
To go along with what you're saying, I've heard andamos / ando buscando when there was searching at that very moment
"Estamos buscando unos zapatos para la fiesta" accepted 10/20/18.
It corrected me to: Nosotros buscamos algunos zapatos para la fiesta.
Why is algunos conjugated after buscamos?
It is not conjugated - it just looks that way. Algunos (some) is matching the plural of shoe. (I think!)