$sql = mysql_connect('localhost', 'user', 'password');
mysql_select_db('base', $sql);
mysql_query("DELETE FROM your_table WHERE pole_s_tekstom LIKE '%STOPSLOVO1%' OR vk_text LIKE '%STOPSLOVO2%'");
mysql_close();

 

mysql_query("DELETE FROM your_table WHERE pole_s_tekstom LIKE '%STOPSLOVO1%' OR vk_text LIKE '%STOPSLOVO2%'"); 

 mysql_query("DELETE FROM your_table WHERE pole_s_tekstom LIKE '%STOPSLOVO1%' OR vk_text LIKE '%STOPSLOVO2%' OR vk_text LIKE '%STOPSLOVO3%'");

 mysql_query("DELETE FROM your_table WHERE pole_s_tekstom LIKE '%STOPSLOVO1%' OR vk_text LIKE '%STOPSLOVO2%' OR vk_text LIKE '%STOPSLOVO3%' OR vk_text LIKE '%STOPSLOVO3%'");