diff --git a/.phpunit.result.cache b/.phpunit.result.cache
new file mode 100644
index 0000000..461b7b5
--- /dev/null
+++ b/.phpunit.result.cache
@@ -0,0 +1 @@
+{"version":1,"defects":{"LaravelProfaneTests\\DictionaryTest::test_word_from_only_vi_files":3,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_word_in_vietnamese":3,"LaravelProfaneTests\\StrTest::test_remove_accents_in_vietnamese":3},"times":{"LaravelProfaneTests\\DictionaryTest::test_words_from_only_one_locale":0.021,"LaravelProfaneTests\\DictionaryTest::test_words_from_only_one_file":0.001,"LaravelProfaneTests\\DictionaryTest::test_words_from_locale_array":0.001,"LaravelProfaneTests\\DictionaryTest::test_words_from_file_array":0.001,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_word_with_numbers":0.003,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_not_validate_a_word_with_numbers_in_strict_mode":0.004,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_text":0.003,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_evaluate_profanity_of_a_word":0.001,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_evaluate_profanity_of_a_sentence":0.001,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_evaluate_profanity_of_a_sentence_in_strict_mode":0.001,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_evaluate_profanity_of_a_html_string":0.001,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_evaluate_as_caseless_mode":0,"LaravelProfaneTests\\ProfaneValidatorTest::test_match_content":0.001,"LaravelProfaneTests\\ProfaneValidatorTest::test_match_exact_word_in_strict_mode":0.004,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_bad_word_with_accent":0.001,"LaravelProfaneTests\\ProfaneValidatorTest::test_enie_in_spanish_is_evaluated":0,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_word_in_greek":0.002,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_text_in_greek":0.002,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_word_in_french":0.002,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_word_in_french_canadian":0.001,"LaravelProfaneTests\\StrTest::test_string_contains_a_piece_insensitive_match_from_text":0,"LaravelProfaneTests\\StrTest::test_text_contains_insensitive_match_from_array":0,"LaravelProfaneTests\\StrTest::test_text_contains_insensitive_match_from_string":0,"LaravelProfaneTests\\StrTest::test_text_does_not_contain_match_in_strict_mode":0,"LaravelProfaneTests\\StrTest::test_text_contains_match_in_strict_mode":0,"LaravelProfaneTests\\StrTest::test_text_contains_match_in_not_strict_mode":0,"LaravelProfaneTests\\StrTest::test_text_contains_the_same_insensitive_match_from_string":0,"LaravelProfaneTests\\StrTest::test_remove_accents_in_spanish_text":0,"LaravelProfaneTests\\StrTest::test_enie_char_is_allowed":0,"LaravelProfaneTests\\StrTest::test_remove_accents_in_greek":0,"LaravelProfaneTests\\DictionaryTest::test_word_from_only_vi_files":0,"LaravelProfaneTests\\ProfaneValidatorTest::test_can_validate_a_word_in_vietnamese":0,"LaravelProfaneTests\\StrTest::test_remove_accents_in_vietnamese":0,"LaravelProfaneTests\\StrTest::test_text_contains_sensitive_match_from_string_in_vietnamese":0}}
\ No newline at end of file
diff --git a/src/dict/vi.php b/src/dict/vi.php
new file mode 100644
index 0000000..daa4230
--- /dev/null
+++ b/src/dict/vi.php
@@ -0,0 +1,25 @@
+<?php
+
+return [
+    'con cạc',
+    'đỉ chó',
+    'đỉ mẹ',
+    'má mày',
+    'đủ má',
+    'đỉ lồn',
+    'thằng đỉ',
+    'cc',
+    'chó má',
+    'thằng lồn',
+    'đụ mẹ',
+    'mẹ mày',
+    'đỉ mẹ mày',
+    'cặc lồn',
+    'lồn mẹ',
+    'đủy mẹ',
+    'thằng lờ',
+    'đỉ má',
+    'lồn chó',
+    'nứng lồn',
+    'cặc lồn'
+];
diff --git a/src/lang/vi/validation.php b/src/lang/vi/validation.php
new file mode 100644
index 0000000..fb76b03
--- /dev/null
+++ b/src/lang/vi/validation.php
@@ -0,0 +1,5 @@
+<?php
+
+return [
+    'profane' => 'Trường :attribute có từ thô tục'
+];
diff --git a/tests/DictionaryTest.php b/tests/DictionaryTest.php
index 79abbcd..8858870 100644
--- a/tests/DictionaryTest.php
+++ b/tests/DictionaryTest.php
@@ -55,4 +55,11 @@ public function test_words_from_file_array()
 
         $this->assertEquals($dictionary->getDictionary(), $expected);
     }
+
+    public function test_word_from_only_vi_files(){
+        $dictionary = new Dictionary(__DIR__.'/../src/dict/vi.php');
+        $expected = include __DIR__.'/../src/dict/vi.php';
+        $this->assertEquals($dictionary->getDictionary(), $expected);
+    }
+
 }
diff --git a/tests/ProfaneValidatorTest.php b/tests/ProfaneValidatorTest.php
index 95ffb7f..2baa1e6 100644
--- a/tests/ProfaneValidatorTest.php
+++ b/tests/ProfaneValidatorTest.php
@@ -150,4 +150,15 @@ public function test_can_validate_a_word_in_french_canadian()
 
         $this->assertFalse($builder->validate(['description', 'Décrisse gros cave', ['en', 'fr-ca']]));
     }
+
+    public function test_can_validate_a_word_in_vietnamese(){
+        $this->mockConfigs();
+
+        $builder = new ProfaneValidatorBuilder('vi');
+
+        $word = 'ê con cạc thằng lồn';
+
+        $this->assertTrue($builder->build()->isProfane($word));
+    }
+
 }
diff --git a/tests/StrTest.php b/tests/StrTest.php
index a7427ca..3b42fc6 100644
--- a/tests/StrTest.php
+++ b/tests/StrTest.php
@@ -59,4 +59,13 @@ public function test_remove_accents_in_greek()
     {
         $this->assertEquals('μαλακας', Str::removeAccent('μαλάκας'));
     }
+
+    public function test_remove_accents_in_vietnamese(){
+        $this->assertEquals('thằng lồn', Str::removeAccent('thằng lồn'));
+    }
+
+    public function test_text_contains_sensitive_match_from_string_in_vietnamese(){
+        $this->assertTrue(Str::containsCaseless('con đỉ mẹ mày', 'đỉ mẹ mày'));
+    }
+
 }