Perfect

SELECT * FROM gallery2 WHERE topic_id="750769" UNION SELECT * FROM gallery2 WHERE topic_id="1488794" UNION SELECT * FROM gallery2 WHERE topic_id="1445856" UNION SELECT * FROM gallery2 WHERE topic_id="1108706" UNION SELECT * FROM gallery2 WHERE topic_id="801088" UNION SELECT * FROM gallery2 WHERE topic_id="1391939" UNION SELECT * FROM gallery2 WHERE topic_id="1028745" UNION SELECT * FROM gallery2 WHERE topic_id="629198" UNION SELECT * FROM gallery2 WHERE topic_id="1560355" UNION SELECT * FROM gallery2 WHERE topic_id="1748586" UNION SELECT * FROM gallery2 WHERE topic_id="1660409" UNION SELECT * FROM gallery2 WHERE topic_id="950541" UNION SELECT * FROM gallery2 WHERE topic_id="979275" UNION SELECT * FROM gallery2 WHERE topic_id="847452" UNION SELECT * FROM gallery2 WHERE topic_id="1762175" UNION SELECT * FROM gallery2 WHERE topic_id="990600"