use the following search parameters to narrow your results:
- reddit:'{name}'
- find things posted in {name} only
- author:'{username}'
- return things submitted by {username} only
- site:'{domain}'
- get links to pages on {domain} only
- url:'{text}'
- search for {text} in url
- selftext:'{text}'
- search for {text} in self post contents
- is_self:{1|0}
- include (1) or exclude (0) self posts
- over18:{1|0}
- include (1) or exclude (0) results tagged NSFW
e.g.(and 'dog' reddit:'aww' site:'imgur.com')
see the search faq for details.