title: How to convert Vietnamese text to normal text?
body: <p>I have a Vietnamese text like this :</p>
  
  <pre><code>String text = "Xin chào Việt Nam";
  </code></pre>
  
  <p>And I want to convert it to normal text. My expect result :</p>
  
  <pre><code>String result = " "Xin chao Viet Nam";
  </code></pre>
  
  <p>How can I do that? Thanks.</p>