diff --git a/i18n/Bulgarian.lang b/i18n/Bulgarian.lang
index d8e37f1..bde4c40 100644
--- a/i18n/Bulgarian.lang
+++ b/i18n/Bulgarian.lang
@@ -2,7 +2,7 @@
  * Bulgarian translation
  *  @name Bulgarian
  *  @anchor Bulgarian
- *  @author Rostislav Stoyanov
+ *  @author Rostislav Stoyanov, Oliwier Thomas
  */
 
 {
@@ -13,7 +13,7 @@
 	"sInfoEmpty":    "Показване на резултати от 0 до 0 от общо 0",
 	"sInfoFiltered": "(филтрирани от общо _MAX_ резултата)",
 	"sInfoPostFix":  "",
-	"sSearch":       "Търсене във всички колони:",
+	"sSearch":       "Търсене:",
 	"sUrl":          "",
 	"oPaginate": {
 		"sFirst":    "Първа",
diff --git a/i18n/German.lang b/i18n/German.lang
index d71afc5..3fcbe35 100644
--- a/i18n/German.lang
+++ b/i18n/German.lang
@@ -4,20 +4,21 @@
  *  @anchor German
  *  @author Joerg Holz
  *  @author DJmRek - Markus Bergt
+ *  @author OSWorX https://osworx.net
  */
 
 {
 	"sEmptyTable":   	"Keine Daten in der Tabelle vorhanden",
 	"sInfo":         	"_START_ bis _END_ von _TOTAL_ Einträgen",
-	"sInfoEmpty":    	"0 bis 0 von 0 Einträgen",
+	"sInfoEmpty":    	"Keine Daten vorhanden",
 	"sInfoFiltered": 	"(gefiltert von _MAX_ Einträgen)",
 	"sInfoPostFix":  	"",
 	"sInfoThousands":  	".",
 	"sLengthMenu":   	"_MENU_ Einträge anzeigen",
-	"sLoadingRecords": 	"Wird geladen...",
-	"sProcessing":   	"Bitte warten...",
+	"sLoadingRecords": 	"Wird geladen ..",
+	"sProcessing":   	"Bitte warten ..",
 	"sSearch":       	"Suchen",
-	"sZeroRecords":  	"Keine Einträge vorhanden.",
+	"sZeroRecords":  	"Keine Einträge vorhanden",
 	"oPaginate": {
 		"sFirst":    	"Erste",
 		"sPrevious": 	"Zurück",
@@ -34,5 +35,16 @@
 			"0": "Zum Auswählen auf eine Zeile klicken",
 			"1": "1 Zeile ausgewählt"
 	    	}
+	},
+	"buttons": {
+		"print":	"Drucken",
+		"colvis":	"Spalten",
+		"copy":		"Kopieren",
+		"copyTitle":	"In Zwischenablage kopieren",
+		"copyKeys":	"Taste <i>ctrl</i> oder <i>\u2318</i> + <i>C</i> um Tabelle<br>in Zwischenspeicher zu kopieren.<br><br>Um abzubrechen die Nachricht anklicken oder Escape drücken.",
+		"copySuccess": {
+			"_": "%d Spalten kopiert",
+			"1": "1 Spalte kopiert"
+		}
 	}
 }
diff --git a/i18n/Portuguese.lang b/i18n/Portuguese.lang
index 89a0076..a064274 100644
--- a/i18n/Portuguese.lang
+++ b/i18n/Portuguese.lang
@@ -6,6 +6,7 @@
  */
 
 {
+	"sEmptyTable":   "Nenhum registro encontrado",
 	"sProcessing":   "A processar...",
 	"sLengthMenu":   "Mostrar _MENU_ registos",
 	"sZeroRecords":  "Não foram encontrados resultados",
@@ -20,5 +21,9 @@
 	    "sPrevious": "Anterior",
 	    "sNext":     "Seguinte",
 	    "sLast":     "Último"
+	},
+	"oAria": {
+	    "sSortAscending":  ": Ordenar colunas de forma ascendente",
+	    "sSortDescending": ": Ordenar colunas de forma descendente"
 	}
 }
diff --git a/sorting/czech-string.js b/sorting/czech-string.js
new file mode 100644
index 0000000..7d62476
--- /dev/null
+++ b/sorting/czech-string.js
@@ -0,0 +1,30 @@
+$.extend( $.fn.dataTableExt.oSort, {
+   "czech-pre": function ( a ) {
+        var special_letters = {
+            "A": "Aa", "a": "aa", "Á": "Ab", "á": "ab",
+            "C": "Ca", "c": "ca", "Č": "Cb", "č": "cb",
+            "D": "Da", "d": "da", "Ď": "db", "ď": "db",
+            "E": "Ea", "e": "ea", "É": "eb", "é": "eb", "Ě": "Ec", "ě": "ec",
+            "I": "Ia", "i": "ia", "Í": "Ib", "í": "ib",
+            "N": "Na", "n": "na", "Ň": "Nb", "ň": "nb",
+            "O": "Oa", "o": "oa", "Ó": "Ob", "ó": "ob",
+            "R": "Ra", "r": "ra", "Ř": "Rb", "ř": "rb",
+            "S": "Sa", "s": "sa", "Š": "Sb", "š": "šb",
+            "T": "Ta", "t": "ta", "Ť": "Tb", "ť": "tb",
+            "U": "Ua", "u": "ua", "Ú": "Ub", "ú": "ub", "Ů": "Uc", "ů": "uc",
+            "Y": "Ya", "y": "ya", "Ý": "Yb", "ý": "yb",
+            "Z": "Za", "z": "za", "Ž": "Zb", "ž": "zb"
+        };
+        for (var val in special_letters)
+            a = a.split(val).join(special_letters[val]).toLowerCase();
+        return a;
+    },
+
+    "czech-asc": function ( a, b ) {
+        return ((a < b) ? -1 : ((a > b) ? 1 : 0));
+    },
+
+    "czech-desc": function ( a, b ) {
+        return ((a < b) ? 1 : ((a > b) ? -1 : 0));
+    }
+} );