What is the difference b/w these queries "site:netbuilders.org" and
site:netbuilders.org "www.netbuilders.org"

When we searched in Google, both will give different results?? Why it so??

It shows 2300 results..
[ame="http://www.google.com/search?hl=en&rlz=1B3GGGL_enIN337IN338&q=site%3Anet builders.org&aq=f&aqi=&oq="]site:netbuilders.org - Google Search[/ame]


while It gives 228K results.
[ame="http://www.google.com/search?hl=en&rlz=1B3GGGL_enIN337IN338&q=site%3Anet builders.org+%22www.netbuilders.org%22&aq=f&aqi=&o q="]site:netbuilders.org "www.netbuilders.org" - Google Search[/ame]