The error is that the program fails to search keyword.
Here is the following code:
$query = "SELECT english.word, maranao.word, maranao.pronounciation, maranao.grammar, english.definition" .
"FROM english, maranao".
"WHERE english.keyword_num = maranao.keyword_num and english.word = '$search'";
$result = mysql_query($query) or die(mysql_error());
while($row=mysql_fetch_array($result))
{
echo $row['word'];
echo $row['pronounciation'];
echo $row['grammar'];
echo $row['definition'];
}