import re
string = r'''<p>$$(Dialog_BasicDialog_Content)</p>'''
regex = re.compile("\$\$\(.*?\)")
r = regex.search(string)
v = regex.findall(string)
for item in sorted(v): print item
aW1wb3J0IHJlCnN0cmluZyA9IHInJyc8cD4kJChEaWFsb2dfQmFzaWNEaWFsb2dfQ29udGVudCk8L3A+JycnCnJlZ2V4ID0gcmUuY29tcGlsZSgiXCRcJFwoLio/XCkiKQpyID0gcmVnZXguc2VhcmNoKHN0cmluZykKdiA9IHJlZ2V4LmZpbmRhbGwoc3RyaW5nKQpmb3IgaXRlbSBpbiBzb3J0ZWQodik6IHByaW50IGl0ZW0=