This helped me but I need more.
Vertically Stacked is okay but I need Asian Layout option.
With Vertically Stacked option, text is displayed vertically but hidden out of cell. see http://cl.ly/JJyH
With Asian Layout option, text is wrapped in cell. Looks better. see http://cl.ly/JKZc
The picture is captured in LibraOffice. MS Office and OpenOffice has the same option.
Isn't it possible to make it in PHPExcel?