I can not access my database

I have the following problem, I am trying to change the year of the dates I have in my database, and for this I am using:

mysqli_fetch_row

But I am not succeeding, returns always fails. I also made a connection to the database and apparently it is working because it does not return with error. I really appreciate any kind of help. If the question is not clear enough, please request that I make the necessary amendments. Thanks

Code:

 <?php 
 //Create a database connection
     $dbhost = "localhost";
     $dbuser = "root";
     $dbpass = "";
     $dbname = "bd-aircaw-1";
     $connection =mysqli_connect($dbhost,$dbuser,$dbpass,$dbname);
 // Check connection
 if (mysqli_connect_errno())
   {
   echo "Failed to connect to MySQL: " . mysqli_connect_error();
   }

    $query = "SELECT * ";
    $query .= "FROM voo ";
    $query .= "WHERE DataPartida = 2014-11-01 18:00:00";

    $result = mysqli_query($connection, $query);
    if(!$result) {
        die ("Database query failed.");
    }

    while($row = mysqli_fetch_row($result)){
        var_dump($row);
        echo "<hr />";
    }