Please be careful when making a statement like "There is no way with the iTunes". I just tested with both DOC adn DOCX formats --through iTunes-- and it wokred perfectly.
If there is some other criteria that makes itunes impossible to load the document (like you dont ahve iTunes or do not have a computer to sync with), please specify that in your response so others coming here for help will not read your posting and think "There is no way wth the iTunes".
To load through itunes. Plug your iOS device into your computer.
Let it sync (easier done afterwards on my machine)
Tap the iOS device from the column on the left.
Tap "App" at the top of the screen that comes up.
Scroll down and pick the app you want to load the file to (must be installed on that device first and be able to use iTunes syncing)
Now use the Button at the bottom to add your file, sellct your file.
You might get the "you have made changes" and ask if you want to sync again. The answer is yes.