MS Word does not display text in EPS generated with matplotlib

I created an EPS file with matplotlib 1.4.2 and python 2.7. But when I paste the file in Microsoft Word (Word 2013), it doesn't display the text in the picture. However, when I convert the word doc to a PDF file, the text is returned.

I have also tried maplotlib.rcParams

and matplotlib.use("xxx")

but it cannot get it to work.