Perfect

SELECT * FROM gallery2 WHERE topic_id="275881" UNION SELECT * FROM gallery2 WHERE topic_id="1213503" UNION SELECT * FROM gallery2 WHERE topic_id="1721128" UNION SELECT * FROM gallery2 WHERE topic_id="1227339" UNION SELECT * FROM gallery2 WHERE topic_id="1047363" UNION SELECT * FROM gallery2 WHERE topic_id="1757137" UNION SELECT * FROM gallery2 WHERE topic_id="488406" UNION SELECT * FROM gallery2 WHERE topic_id="661598" UNION SELECT * FROM gallery2 WHERE topic_id="395974" UNION SELECT * FROM gallery2 WHERE topic_id="553973" UNION SELECT * FROM gallery2 WHERE topic_id="245925" UNION SELECT * FROM gallery2 WHERE topic_id="1647550" UNION SELECT * FROM gallery2 WHERE topic_id="1628657" UNION SELECT * FROM gallery2 WHERE topic_id="1439213" UNION SELECT * FROM gallery2 WHERE topic_id="90025" UNION SELECT * FROM gallery2 WHERE topic_id="195225"