For once this post applies only to those with the full version of Visual Studio 2010 or 2012 (Hey it's my 1,700th published post- so a one off) not the free Express versions. The default search in VS is ok but if you want to do anything complex, you need to do a regular express search. Ie in the Find options you click the Use box and select Regular expressions.
But apparently 88% of those regex searches fail. There's a free addin (access it from Nuget- the Extension Manager on the Tools menu) called Sando Search. It's 10 MB in size and uses Lucene.net, a .NET version of a Java text search engine that I guess makes up those 10MB.
If you want to search say all uses of the word Render or List in Sando, just type it in either way Render List or List Render in the pop up Sando search Windows and it works. That's very neat. More details about Sando on a blog entry by David C. Shepherd.