You can only put it in as a picture. You cannot put in the actual text unless you copied and paste, as you said you tried. So here it is, I do it all the time at work:
Go to your Adoba File and hit Save As
Save it as a "JPEG" document file, not an Adobe file. (where it says "Save as Type" under "File Name")
Then go into your Word Document, into a new page.
Click "Insert", "Picture", "From File"
Find where you saved the pictures as (they will have saved as separate images per page. Meaning, page 1 will be one image, page 2 a separate image)
Hit the control key to select multiple pages at a time (unless you want to do each page for each page).
Then hit "Insert"
They will show up in the alphabetical order they show up in your file selection, each on their own page for each individual page you have saved from the Adobe File.
That is how to do it. If it doesn't work for you or I wasn't very clear, post an update on your question and I will come back and try to get you more help if you need it. But I think I said it clear enough. But I'm no brilliant teacher :)
Make sure your PDF file looks good, like crop the outlines if you have to. It will look exactly in your Word Document as it does in Adobe.
I have done it several times at work and just did it a few times to try it out as I was typing out the steps.