아무 같은데 doesn't make sense. so your goolgling of 아무 같은데 is useless. but if you want to know "I don't think so" in Korean, I can suggest several things. like these things, 아닌 거 같은데(it dosen't seem~, it doesn't look~) or 나는 그렇게 생각 안 해(I don't think so) if you feel I am rude or not appropreate in use of Enlgish, forgive me. I can not express my thoughts completely. have a wonderful day.