$query='(SELECT * FROM price1 WHERE cod_searche LIKE "'.$num_search.$tip_search.'" OR cod_searche LIKE "%,'.$num_search.$tip_search.'")
UNION
(SELECT * FROM price2 WHERE cod_searche LIKE "'.$num_search.$tip_search.'" OR cod_searche LIKE "%,'.$num_search.$tip_search.'")
LIMIT 1,100;';