Missing chunks of browser history

[wendyy]

I closed my browser to free up band width and intended to go back to my history upon reopening so that I can see which tabs I wanted to continue. I went back to my Ccleaner browser about 7 hours later the same day and none of my open tabs are showing in my browser history. I closed my browser around 11:05 am. All my history is gone from 10:56 am to 1:30 pm, from 1:47  - 2:04 pm and for many other similar periods in the same day. All it shows is a vertical line in between those times where it shows no history.  Is there a way for me to pull up those missing tabs from the browser history? I am on a Windows 10 computer. Also, going into "Settings" and selecting "New Session" > Continue where you left off doesn't seem to work either.