Q: need help getting 3 songs on iTunes

I have three songs that when i open iTunes on my iPhone 6S and search the name of them it show purchased next to the song name. If I go to the more tab in iTunes select purchased then music and look under on iPhone or on computer and not on iPhone and not on computer it doesn't show the songs on any of my apple devices (apple computer, iPods, iPhone). Please help me or explain it to me. Thank you