support their self造句

Thousands of volunteers sold coffee from Angola and Nicaragua in Worldshops, in the back of churches, from their homes and from stands in public places, using the products as a vehicle to deliver their message : give disadvantaged producers in developing countries a fair chance on the world s market, and you support their self-determined sustainable development.
It's difficult to find support their self in a sentence. 用support their self造句挺难的