diff --git a/index.js b/index.js
index e26bf51..f49400f 100644
--- a/index.js
+++ b/index.js
@@ -14,6 +14,11 @@ var characterMap = {
 	"Ầ": "A",
 	"Ằ": "A",
 	"Ȃ": "A",
+	"Ả": "A",
+	"Ạ": "A",
+	"Ẩ": "A",
+	"Ẫ": "A",
+	"Ậ": "A",
 	"Ç": "C",
 	"Ḉ": "C",
 	"È": "E",
@@ -26,12 +31,20 @@ var characterMap = {
 	"Ḕ": "E",
 	"Ḝ": "E",
 	"Ȇ": "E",
+	"Ẻ": "E",
+	"Ẽ": "E",
+	"Ẹ": "E",
+	"Ể": "E",
+	"Ễ": "E",
+	"Ệ": "E",
 	"Ì": "I",
 	"Í": "I",
 	"Î": "I",
 	"Ï": "I",
 	"Ḯ": "I",
 	"Ȋ": "I",
+	"Ỉ": "I",
+	"Ị": "I",
 	"Ð": "D",
 	"Ñ": "N",
 	"Ò": "O",
@@ -44,10 +57,25 @@ var characterMap = {
 	"Ṍ": "O",
 	"Ṓ": "O",
 	"Ȏ": "O",
+	"Ỏ": "O",
+	"Ọ": "O",
+	"Ổ": "O",
+	"Ỗ": "O",
+	"Ộ": "O",
+	"Ờ": "O",
+	"Ở": "O",
+	"Ỡ": "O",
+	"Ớ": "O",
+	"Ợ": "O",
 	"Ù": "U",
 	"Ú": "U",
 	"Û": "U",
 	"Ü": "U",
+	"Ủ": "U",
+	"Ụ": "U",
+	"Ử": "U",
+	"Ữ": "U",
+	"Ự": "U",
 	"Ý": "Y",
 	"à": "a",
 	"á": "a",
@@ -64,6 +92,11 @@ var characterMap = {
 	"ầ": "a",
 	"ằ": "a",
 	"ȃ": "a",
+	"ả": "a",
+	"ạ": "a",
+	"ẩ": "a",
+	"ẫ": "a",
+	"ậ": "a",
 	"ç": "c",
 	"ḉ": "c",
 	"è": "e",
@@ -76,12 +109,20 @@ var characterMap = {
 	"ḕ": "e",
 	"ḝ": "e",
 	"ȇ": "e",
+	"ẻ": "e",
+	"ẽ": "e",
+	"ẹ": "e",
+	"ể": "e",
+	"ễ": "e",
+	"ệ": "e",
 	"ì": "i",
 	"í": "i",
 	"î": "i",
 	"ï": "i",
 	"ḯ": "i",
 	"ȋ": "i",
+	"ỉ": "i",
+	"ị": "i",
 	"ð": "d",
 	"ñ": "n",
 	"ò": "o",
@@ -94,10 +135,25 @@ var characterMap = {
 	"ṍ": "o",
 	"ṓ": "o",
 	"ȏ": "o",
+	"ỏ": "o",
+	"ọ": "o",
+	"ổ": "o",
+	"ỗ": "o",
+	"ộ": "o",
+	"ờ": "o",
+	"ở": "o",
+	"ỡ": "o",
+	"ớ": "o",
+	"ợ": "o",
 	"ù": "u",
 	"ú": "u",
 	"û": "u",
 	"ü": "u",
+	"ủ": "u",
+	"ụ": "u",
+	"ử": "u",
+	"ữ": "u",
+	"ự": "u",
 	"ý": "y",
 	"ÿ": "y",
 	"Ā": "A",
@@ -412,7 +468,7 @@ function matcher(match) {
 	return characterMap[match];
 }
 
-var removeAccents = function(string) {	
+var removeAccents = function(string) {
 	return string.replace(allAccents, matcher);
 };
 
diff --git a/test.js b/test.js
index dd8dd14..bea305e 100644
--- a/test.js
+++ b/test.js
@@ -2,9 +2,9 @@ var tape = require('tape');
 var removeAccents = require('./');
 
 tape('remove accents from string', function(t) {
-	var input = 'ÀÁÂÃÄÅẤẮÆẦẰÇḈÈÉÊËẾḖỀḔÌÍÎÏḮÐÑÒÓÔÕÖØỐṌṒÙÚÛÜÝàáâãäåấắæầằçḉèéêëếḗềḕìíîïḯñòóôõöøốṍṓùúûüýÿĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒēĔĕĖėĘęĚěĜĝĞğĠġĢģǴǵĤĥĦħĨĩĪīĬĭĮįİıIJijĴĵĶķḰḱĹĺĻļĽľĿŀŁłḾḿŃńŅņŇňʼnŌōŎŏŐőŒœŔŕŖŗŘřŚśŜŝŞşŠšŢţŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵẂẃŶŷŸŹźŻżŽžſƒƠơƯưǍǎǏǐǑǒǓǔǕǖǗǘǙǚǛǜỨứṸṹǺǻǼǽǾǿðÞþṔṕṤṥX́x́ЃѓЌќA̋a̋E̋e̋I̋i̋ǸǹỒồṐṑỪừẀẁỲỳȀȁȄȅȈȉȌȍȐȑȔȕẲẴẶḜẳẵặḝC̆c̆ḪḫK̆k̆M̆m̆N̆n̆P̆p̆R̆r̆T̆t̆V̆v̆X̆x̆Y̆y̆ȂȆȊȎȃȇȋȏȒȓȖȗșțȘȚB̌b̌F̌f̌ǦǧȞȟJ̌ǰǨǩM̌m̌P̌p̌Q̌q̌ṦṧV̌v̌W̌w̌X̌x̌Y̌y̌A̧a̧B̧b̧ḐḑȨȩƐ̧ɛ̧ḨḩI̧i̧Ɨ̧ɨ̧M̧m̧O̧o̧Q̧q̧U̧u̧X̧x̧Z̧z̧';
+	var input = 'ÀÁÂÃÄÅẤẮÆẦẰẢẠẨẪẬÇḈÈÉÊËẾḖỀḔẺẼẸỂỄỆÌÍÎÏḮỈỊÐÑÒÓÔÕÖØỐṌṒỎỌỔỖỘỜỞỠỚỢÙÚÛÜỦỤỬỮỰÝàáâãäåấắæầằảạẩẫậçḉèéêëếḗềḕẻẽẹểễệìíîïḯỉịñòóôõöøốṍṓỏọổỗộờởỡớợùúûüủụửữựýÿĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒēĔĕĖėĘęĚěĜĝĞğĠġĢģǴǵĤĥĦħĨĩĪīĬĭĮįİıIJijĴĵĶķḰḱĹĺĻļĽľĿŀŁłḾḿŃńŅņŇňʼnŌōŎŏŐőŒœŔŕŖŗŘřŚśŜŝŞşŠšŢţŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵẂẃŶŷŸŹźŻżŽžſƒƠơƯưǍǎǏǐǑǒǓǔǕǖǗǘǙǚǛǜỨứṸṹǺǻǼǽǾǿðÞþṔṕṤṥX́x́ЃѓЌќA̋a̋E̋e̋I̋i̋ǸǹỒồṐṑỪừẀẁỲỳȀȁȄȅȈȉȌȍȐȑȔȕẲẴẶḜẳẵặḝC̆c̆ḪḫK̆k̆M̆m̆N̆n̆P̆p̆R̆r̆T̆t̆V̆v̆X̆x̆Y̆y̆ȂȆȊȎȃȇȋȏȒȓȖȗșțȘȚB̌b̌F̌f̌ǦǧȞȟJ̌ǰǨǩM̌m̌P̌p̌Q̌q̌ṦṧV̌v̌W̌w̌X̌x̌Y̌y̌A̧a̧B̧b̧ḐḑȨȩƐ̧ɛ̧ḨḩI̧i̧Ɨ̧ɨ̧M̧m̧O̧o̧Q̧q̧U̧u̧X̧x̧Z̧z';
 	var output = removeAccents(input);
-        var expected = 'AAAAAAAAAEAACCEEEEEEEEIIIIIDNOOOOOOOOOUUUUYaaaaaaaaaeaacceeeeeeeeiiiiinooooooooouuuuyyAaAaAaCcCcCcCcDdDdEeEeEeEeEeGgGgGgGgGgHhHhIiIiIiIiIiIJijJjKkKkLlLlLlLlllMmNnNnNnnOoOoOoOEoeRrRrRrSsSsSsSsTtTtTtUuUuUuUuUuUuWwWwYyYZzZzZzsfOoUuAaIiOoUuUuUuUuUuUuUuAaAEaeOodTHthPpSsXxГгКкAaEeIiNnOoOoUuWwYyAaEeIiOoRrUuAAAEaaaeCcHhKkMmNnPpRrTtVvXxYyAEIOaeioRrUustSTBbFfGgHhJjKkMmPpQqSsVvWwXxYyAaBbDdEeEeHhIiIiMmOoQqUuXxZz';
+        var expected = 'AAAAAAAAAEAAAAAAACCEEEEEEEEEEEEEEIIIIIIIDNOOOOOOOOOOOOOOOOOOOUUUUUUUUUYaaaaaaaaaeaaaaaaacceeeeeeeeeeeeeeiiiiiiinooooooooooooooooooouuuuuuuuuyyAaAaAaCcCcCcCcDdDdEeEeEeEeEeGgGgGgGgGgHhHhIiIiIiIiIiIJijJjKkKkLlLlLlLlllMmNnNnNnnOoOoOoOEoeRrRrRrSsSsSsSsTtTtTtUuUuUuUuUuUuWwWwYyYZzZzZzsfOoUuAaIiOoUuUuUuUuUuUuUuAaAEaeOodTHthPpSsXxГгКкAaEeIiNnOoOoUuWwYyAaEeIiOoRrUuAAAEaaaeCcHhKkMmNnPpRrTtVvXxYyAEIOaeioRrUustSTBbFfGgHhJjKkMmPpQqSsVvWwXxYyAaBbDdEeEeHhIiIiMmOoQqUuXxZz';
 
 	t.same( output, expected );
 
@@ -54,4 +54,3 @@ tape('ß is not accented', function(t) {
   t.same(removeAccents.remove('Straße'), 'Straße');
   t.end();
 });
-