How to do group by in SQL?

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SQL-Server-2005

SQL-Server

I want to add group by clause on below query

SELECT TOP   10  * FROM 
                  (
                          SELECT  *
                          FROM 
                          (
                                  SELECT   Univadis2_Articles.ArticleID, 
                                          Univadis2_Articles.Title, 
                                          dbo.StripHTMLTags(Univadis2_Articles.Long_Resume) As SubSection,
                                          dbo.StripHTMLTags(Univadis2_Articles.Short_Resume) As Section,
                                          Univadis2_Articles.ExternalLink
                                  FROM Univadis2_Articles 
                                  INNER JOIN Univadis2_ContentServices
                                      ON Univadis2_Articles.ContentServiceNodeID = Univadis2_ContentServices.NodeID AND Univadis2_ContentServices.Title= 'MIMS' WHERE 1=1 And dbo.Univadis2_Articles.Long_Resume IS NOT NULL AND dbo.Univadis2_Articles.Short_Resume IS NOT NULL  AND (Univadis2_Articles.Title LIKE '%twist%' OR Univadis2_Articles.Keywords LIKE '%twist%') 
                          ) Univadis2_Articles 
                  ) Univadis2_Articles 
                  Order By Cast(Section As Varchar(100)), Cast(SubSection As Varchar(100))

can any one plz help me, after wxecution above query it shows the duplicate data.. i want to group by them with Univadis2_Articles.Title field.