A suitable solution might be using Jword in the link below. It's not free but easy to use.
http://www.independentsoft.de/jword/index.html
Using the library is as simple as this sample code
private String docxRead(String filePath) {
try {
WordDocument doc = new WordDocument(filePath);
String text = doc.toText();
return text;
}
catch (Exception e) {
Toast.makeText(context, e.getMessage(), Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
return "";
}