Coordenação de compra = Licitação : check out Google and you'll see that these two terms are used as interchangeably.....

http://en.wikipedia.org/wiki/Government_procurement
Government procurement, also called public tendering or public procurement, is the procurement of goods and services on behalf of a public authority, such as a government agency. With 10 to 15% of GDP in developed countries, and up to 20% in developing countries, government procurement accounts for a substantial part of the global economy.[1]

To prevent fraud, waste, corruption or local protectionism, the law of most countries regulates government procurement more or less closely. It usually requires the procuring authority to issue public tenders if the value of the procurement exceeds a certain threshold.

http://us.yhs4.search.yahoo.com/yhs/search?hspart=ironsource...