I am using SearchDataSource in CMS 6 to do a database content search on the site. It returns result for the title and heading of the page but If I search for other properties on the page it does not return any results. Do I need to run an indexing service manually to make the search work or am I missing some configuration.

The code I am using for search is 

aspx:

<EPiServer:SearchDataSource ID="SearchDataSourceCtrl" runat="server" EnableVisibleInMenu="false">
</EPiServer:SearchDataSource>

code behind:

 SearchDataSourceCtrl.PageLink = PageReference.RootPage;
            SearchDataSourceCtrl.IncludeRootPage = true;
            SearchDataSourceCtrl.SearchFiles = true;
            SearchDataSourceCtrl.SearchLocations = "~/Global/,~/Documents/,~/PageFiles/";
            SearchDataSourceCtrl.SearchQuery = Criteria;
            SearchDataSourceCtrl.OnlyWholeWords = false;
            SearchDataSourceCtrl.DataBind();

The tree branches on my CMS starts from the root page rather than the start page hence I am using RootPage in the page link.

Also I have multiple language enabled and I have tried setting the LanguageBraches property on the SearchDataSourceCtrl.