diff --git a/src/Jackett/Indexers/Abstract/CouchPotatoTracker.cs b/src/Jackett/Indexers/Abstract/CouchPotatoTracker.cs
index fdb9e12e9..9b8123d2a 100644
--- a/src/Jackett/Indexers/Abstract/CouchPotatoTracker.cs
+++ b/src/Jackett/Indexers/Abstract/CouchPotatoTracker.cs
@@ -46,10 +46,16 @@ namespace Jackett.Indexers.Abstract
             return IndexerConfigurationStatus.RequiresTesting;
         }
 
+        protected virtual string GetSearchString(TorznabQuery query)
+        {
+            // can be overriden to alter the search string
+            return query.GetQueryString();
+        }
+
         protected override async Task<IEnumerable<ReleaseInfo>> PerformQuery(TorznabQuery query)
         {
             var releases = new List<ReleaseInfo>();
-            var searchString = query.GetQueryString();
+            var searchString = GetSearchString(query);
 
             var searchUrl = APIUrl;
             var queryCollection = new NameValueCollection();
@@ -82,6 +88,9 @@ namespace Jackett.Indexers.Abstract
             if (error != null)
                 throw new Exception(error);
 
+            if ((int)json["total_results"] == 0)
+                return releases;
+
             try
             {
                 foreach (JObject r in json["results"])
diff --git a/src/Jackett/Indexers/DanishBits.cs b/src/Jackett/Indexers/DanishBits.cs
index 8c200b72f..6ad5bdc0d 100644
--- a/src/Jackett/Indexers/DanishBits.cs
+++ b/src/Jackett/Indexers/DanishBits.cs
@@ -6,6 +6,7 @@ using System.Text;
 using Jackett.Indexers.Abstract;
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using System.Text.RegularExpressions;
 
 namespace Jackett.Indexers
 {
@@ -30,6 +31,18 @@ namespace Jackett.Indexers
             AddCategoryMapping("tv", TorznabCatType.TV);
         }
 
+        protected override string GetSearchString(TorznabQuery query)
+        {
+            if (string.IsNullOrEmpty(query.SearchTerm) && string.IsNullOrEmpty(query.ImdbID))
+            {
+                return "%";
+            }
+            var searchString = query.GetQueryString();
+            Regex ReplaceRegex = new Regex("[^a-zA-Z0-9]+");
+            searchString = ReplaceRegex.Replace(searchString, "%");
+            return searchString;
+        }
+
         protected override async Task<IEnumerable<ReleaseInfo>> PerformQuery(TorznabQuery query)
         {
             var newQuery = query;