You can just combine the two, without the need of an extension - use Google to search within Reddit.
Say you want to search Reddit for pancakes - your Google search would be
pancakes site:reddit.com
And Google will return the matches it found on reddit.com. Alas in what I've used it, it won't work with subreddits (like doing "pancakes site:reddit.com/r/pancakes")
Say you want to search Reddit for pancakes - your Google search would be
pancakes site:reddit.com
And Google will return the matches it found on reddit.com. Alas in what I've used it, it won't work with subreddits (like doing "pancakes site:reddit.com/r/pancakes")