title: String matching
body: <p>How to match the string "Net&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amount" (between Net and Amount there can be any number of spaces, including zero) with <code>net amount</code>?</p>
  
  <p>Spaces between these two words can be any whitespace and exact matching of two string should be there. But Net Amount (first string with spaces) can be part of any string like <code>Rate Net Amount</code> or <code>Rate CommissionNet Amount.</code></p>
  
  <p>The match should be <strong>case-insensitive.</strong></p>