One of the most requested features by content administrators is the ability to search by node title on the main content administration page (admin/content/node). Since this isn't a feature of Drupal core, some people have resorted to (gasp!) hacking core or writing custom modules to get it done.
Luckily, there's a much easier way and you likely already have it installed on your site: Views. There's nothing stopping you from writing your own custom admin/content/node page with all the search and filter capabilities you want. All you have to do is utilize View's built in exposed filters and create the view you want. Plus, if you give your View's page display a path of "admin/content/node", it will override the default Drupal content admin page. I've attached a super-quick example for you to check out.
The downside of this approach is that you use Drupal's built-in "Update options" functionality. Luckily, there's a way to replace it and make it a zillion times better. The Views Bulk Operations module. Just install this module, and you'll get an "admin/content/node2" page with the capability to search by node title and have access to a whole bunch of new bulk actions for your nodes - and this just scratches the surface of what this module does.
Wouldn't it be easier to simply use the Edit > Find capability of one's Web browser?
What happens if you have more than 50 nodes? The browser's search will only find the ones on the page you're on...
VBO is awesome. Use it. Nuff said.
Referring to the above comment, I agree, the VBO is very good you have to use it.