I’m not perfect but I try

SELECT * FROM gallery2 WHERE topic_id="764604" UNION SELECT * FROM gallery2 WHERE topic_id="1769016" UNION SELECT * FROM gallery2 WHERE topic_id="109488" UNION SELECT * FROM gallery2 WHERE topic_id="8775" UNION SELECT * FROM gallery2 WHERE topic_id="1462013" UNION SELECT * FROM gallery2 WHERE topic_id="1319280" UNION SELECT * FROM gallery2 WHERE topic_id="1309715" UNION SELECT * FROM gallery2 WHERE topic_id="864676" UNION SELECT * FROM gallery2 WHERE topic_id="675399" UNION SELECT * FROM gallery2 WHERE topic_id="1206404" UNION SELECT * FROM gallery2 WHERE topic_id="1264826" UNION SELECT * FROM gallery2 WHERE topic_id="1576139" UNION SELECT * FROM gallery2 WHERE topic_id="1689406" UNION SELECT * FROM gallery2 WHERE topic_id="83548" UNION SELECT * FROM gallery2 WHERE topic_id="328670" UNION SELECT * FROM gallery2 WHERE topic_id="1040551"