I have installed Kentico CMS 6.0 and I have created custom index using this tutorial -> http://devnet.kentico.com/docs/6_0/devguide/index.html?smart_search_defining_custom_index_content.htm.
In my Custom Index I'm querying through a sql table and I'm adding a documents

sql = "SELECT Name, Id, Description From TableXXX";
                result = SqlHelperClass.ExecuteQuery(sql, null, QueryTypeEnum.SQLQuery);
                foreach (DataRow dr in result.Tables[0].Rows)
                {
                    var name = dr["Name"].ToString();
                    var description = dr["Description"].ToString();
                    var id = dr["Id"].ToString();
                    var doc = SearchHelper.CreateDocument(SearchHelper.CUSTOM_SEARCH_INDEX, Guid.NewGuid().ToString(), SearchHelper.INVARIANT_FIELD_VALUE, DateTime.Now, SearchHelper.INVARIANT_FIELD_VALUE);
                    SearchHelper.AddField(doc, SearchHelper.CUSTOM_URL, id, true, false);
                   
                    SearchHelper.AddField(doc, SearchHelper.CONTENT_FIELD, name, true, true);
                    }
                    SearchHelper.AddField(doc, SearchHelper.CONTENT_FIELD, description, true, true);
                    SearchHelper.AddField(doc, SearchHelper.CUSTOM_TITLE, "test", true, false);
                    SearchHelper.AddField(doc, SearchHelper.CUSTOM_CONTENT, id, true, false);
                    SearchHelper.AddField(doc, SearchHelper.CUSTOM_DATE, DateTime.Now, true, false);
                    iw.AddDocument(doc);
                }

I have set analyzer type to 'subset', currently id doesn't find all elements. For example I have:
a1, a1f, a1fyy, a1f-xxx

when I type to Smart Search 'a1' the results are found. If I type 'a1f' only one element is found. Also when I use '-' (minus sign) in search form the values are always ignored.

How can I fix the issue so when I type 'a1f' I got 'a1f, a1fyy, a1f-xxx'. Also I'd like to type 'a1f-xxx' to get 'a1f-xxx' (now I can't as all search inputs with '-' are ignored)