Q: I store important info in my notes app that I refer daily to. Some of my notes have 'disappeared' from my notes list and I cannot find them. Any ideas how to retrieve my lost notes?

I store important info in my notes app on my Iphone 4S that I refer to daily. Some of my notes have 'disappeared' from my notes app.  Any ideas how to retrieve my lost notes. I am up to date on my software. All notes are  backed up to Icloud. I have approximately 74 notes on my iphone  but Icloud is showing only 15!