This workflow for Alfred 2 will search you snippets from the application Snippets. It's not required to have Snippets running since it will search the data storage (XML file) directly.
ENTER to copy to clipboard.
CMD + ENTER to copy & paste.
ALT + ENTER to view as Large Type.
You can also create a new snippet from a text selection if you open the workflow and assign a hotkey to the "Selection in OS X" trigger.