annoying cutoff


i have this .blend but its really hard to make/improve because when i zoom out to see the entire thing, i cant c all of it because it cutts off!!!
is there any way to change the distance??

You can change the camera clip/start values that the camera will be able view things from.

The picture below highlights the area in yellow in Blender:

There is also a cut-off distance if you go to View>ViewProperties in the 3D window.

thanks both of you