could be character spacing (format/font/character spacing) or (format/paragraph)
also depends on what font has been used to write the original. if your system doesnt have the same font then it will default to your default font ie Times New Roman or Arial.
try highlighting one word and see what font is shown.
also see if tabs have been used (or a table) if it is a table then highlight it all, right click and choose Merge cells. if its tabs then i think you may have to remove them manually.