Fatal error: Maximum execution time of 60 seconds exceeded in E:\server\xampp\htdocs\test\devsheffuncen.ath.cx\includes\common.i

I am getting a similar problem however i created a custom module and started getting the error when i tried to gather data from the database

Fatal error: Maximum execution time of 60 seconds exceeded in.....line 153

the line that it points to is a just a string stored in an array used as select data for a form select option, wasn't giving errors before. I feel the problem may be how i tried to get the data from the database, welcome any help and forgive me i am new to drupal

function pejobsearch_form_submit($form_id, $form_values) {
  //db_query("SELECT vacancy_id, name_position, category FROM post_vacancy WHERE search_keyword ='%s'", $form_values['keyword']);
  //drupal_set_message(t('Gathering Data.'));

  while ($data = db_query("SELECT vacancy_id, name_position, category FROM post_vacancy WHERE search_keyword ='%s'", $form_values['keyword'])){
  	$rows[]	= array($data->name_position, '<strong><u>' .$data->category);
  }
  if ($pager = theme('pager', NULL, 50, 0, tablesort_pager())) {
	$rows[] = array(array('data' => $pager, 'colspan' => '4'));}
  if (!$rows){
	$rows[] = array(array('data' => t('Your search gather no results.'), 'colspan' => '4'));
		     }
  print theme('page', theme('table', $rows));
   return;
  }