Медикаменты с названием на: produse-parafarmaceutice

QUERY: SELECT p.* FROM produse AS p WHERE (p.Litera_ru = 'produse-parafarmaceutice') AND Vizibil = "Y" ORDER BY p.Name_ru LIMIT -18, 18
ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '-18, 18' at line 5