Text Mining for the Rest of Us
6.3. Search Engines - Recommended & Effective
2. Clusty, the clustering search engine - Automatic clustering of search results into sub-topical groups...makes it easy to drill down to just what you need.
3. Yippy, the "Cloud" Maker - Automatically generates a link "cloud" of important subtopic terms found inside your search results.
Yes, there are scores of search engines. This list points to a few that are both easy-to-use and productive.
You will find other specialized search engines that are quite valuable for your purposes. The Journalism/News Research Sites link in the menu up one level describes some of these.
But we advise learning and using a basic few of them. Read the Help files; this will help you learn to use them well.