I woul like to review all of vouchers for each month, but I do not know how to do it. Is there anyone knows it

Hello 1289gh,

Welcome to the Community. QuickBooks offers a variety of reports that help you bring your finances into perspective with ease. I'll be happy to share more info so you can continue to do the things you enjoy. 

In order to view the vouchers in question I recommend running the Profit and Loss report from your Reports menu in QuickBooks.  In case you need to customize/filter the report, here's an article that shows you how to do that. For reference, I also encourage you to check out this article here that goes over the: Reports included in your QuickBooks Online subscription. 

Let me know if this info helps. I'll be one message away in case you need further assistance. Otherwise, I wish you a great rest of the week.