Perhaps you should try some spelling variations:
"The experts sources in .NET" » "The expert sources in .NET", "The expertise sources in .NET", "The experts resources in .NET"
"the expert's guide in .net" » "the expert guide in .net"
"the experts view in .net" » "the experts views in .net", "the expert view in .net", "the expert views in .net"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("The experts sources in .NET") OR ("the experts view in .net"))) OR ("the expert's guide in .net")).
• Removing quotes may allow a broader search: (((( The experts sources in .NET ) or ( the experts view in .net ))) or ( the expert's guide in .net )).
• Adding a wildcard symbol may retrieve word variants: (((("The experts sources in .NET") or ("the experts view in .net"))) or ("the expert's guide in .net"))*.