alt + left click was my friend on tiny screens. It allows me to drag the window that is open upwards so I can get to the buttons on the bottom of a open window that is too big for small screen. Learned that trick on my eepc 701sd with a 7 inch screen.
Trick works on big screens also.
Indeed that is a excellent trick. There is also output scaling with xrandr which helps fit more on smaller screens (as long as the output is not too small to see)
Computers are like air conditioners. They work fine until you start opening Windows. ~Author Unknown