Trouble with regex

[Fernando]

I'm writing a regex to retrieve all the links in a google result page,
but I'm only geting the first one.

Here's some sample code:

import re, urllib

urllib.URLopener.version = "Mozilla/4.0 (compatible; MSIE 6.0; Windows
NT 5.0)"

# result page with 2 links
data = urllib.urlopen('http://www.google.com/search?sourceid=navclient&q=diodenorl').read()

#here's the regex
p = re.compile('<p class=g><a href=([0-9a-zA-Z.:/_-]{1,})')

d = p.search(data)
d.groups()
>('http://www.viruete.com/articulos/gauntlet.htm',)

I only get the first one. How can I get all the occurrences of this
regex?

TIA