You can download the contents of your table data from any campaign, ad group, product group, search terms and many more areas. First login to Googel Adwords and choose from the tabs below the new UI or the old one.
Now add all the columns you want to download.
Using the new UI go to any table, in the right hand side underneath the graph, you will see an arrow pointing down, from here you can download the table contents (see image).
Using the old UI go to any table, than click on the download link located in the horizontal sub menu (see image).