Objects in my window canvas disappear

I have created a window - using GUIDE - for my application. I was working in a computer which has a 21" screen and when I copy my application to the laptop which has a screen of 14" some of the tools that I used in my window such as (Push Button) disappeared (they are not disappearing but I cannot scroll to these tools because they appear out side the canvas of the laptop window because the width of the screen and there is no sliding tool or scroll bar in this canvas that I can use to slide to this tools. How to solve this issue? I can select one of these tools using Object Browser but also with this action I cannot see my tools.