I can't say specifically, but I think with the margins, the minimum that's viable is to make *top/bottom/left/right ½" or 1 cm. Try setting the *header/footer margins to 0 if you don't need headers/footers. Have you considered reducing the font size (for reasonable legibility you can go down to 9, or maybe even 8 ), or changing to *landscape orientation.
*file menu / page setup
The mysteries of MS Office eh?