Perfect

SELECT * FROM gallery2 WHERE topic_id="525790" UNION SELECT * FROM gallery2 WHERE topic_id="218159" UNION SELECT * FROM gallery2 WHERE topic_id="220137" UNION SELECT * FROM gallery2 WHERE topic_id="553912" UNION SELECT * FROM gallery2 WHERE topic_id="1312458" UNION SELECT * FROM gallery2 WHERE topic_id="330526" UNION SELECT * FROM gallery2 WHERE topic_id="766205" UNION SELECT * FROM gallery2 WHERE topic_id="21360" UNION SELECT * FROM gallery2 WHERE topic_id="331913" UNION SELECT * FROM gallery2 WHERE topic_id="353108" UNION SELECT * FROM gallery2 WHERE topic_id="1301109" UNION SELECT * FROM gallery2 WHERE topic_id="1325180" UNION SELECT * FROM gallery2 WHERE topic_id="1747050" UNION SELECT * FROM gallery2 WHERE topic_id="1523978" UNION SELECT * FROM gallery2 WHERE topic_id="1112878" UNION SELECT * FROM gallery2 WHERE topic_id="14892"