CodePlex has two great tools to query your SharePoint 2007 or 2010 search which return raw XML so you can see exactly what is going on in your results.
Fast Search For SharePoint MOSS 2010 Query Tool – Ok, they need to work on the title a bit and the background is just a terrible idea but the thing works for both FAST and Enterprise Search on 2010. It allows you to choose Scope, edit the Default Columns, and a lot more. It’s mostly intuitive to use. Just make sure to change your “Results Provider” to “SharePoint” if you’re using Enterprise instead of FAST.
SharePoint Search Service Tool – This is for SharePoint 2007 and works just as well as the previous one. It has less options but gets you your XML results quickly and edit the query as needed. Plus, a nice background!