You can also give keywordspy a try. KeywordSpy.com is a Keyword Research Tool that helps identify what keywords competitors use, with results actually reflecting what advertisers are using at the current time. - http://www.keywordspy.com

It would be interesting to note some of the features our site has to offer:

• The most comprehensive keyword database with over a billion keywords and counting
• Regular updates on keyword databank including search logs and keywords from our partnership with Internet Service Providers (ISPs) and other reliable data servers
• 99% percent search results accuracy
• Instant downloading capabilities on all search results
• Offers exclusive country keywords (US, United Kingdom, Canada, Australia and South Africa) and more to be added soon
• The only keyword tool that displays Ad Rank, Competitor Count and PPC Cost of keywords
• Watch List, Search History Logs and other handy tools for easier keyword researching
• Provides Excellent Support Service
• User friendly search log accessibility through the use of either Keywords
or Domain names

Most of the keywords and domains I tried resulted in "Your search for xxxx did not generate any results."
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You can always try mine;
www.keywords.code-authors.com

Sometimes there is an error on the page when the data is slow coming back, a refresh will resolve it but it's a work in progress