If you are talking about within the one document, see
http://gregmaxey.mvps.org/Repeating_Data.htm, specifically the Bookmarks
functions. Be aware that these repeats don't automatically refresh, F9 will
refresh the link (usually combined with Ctrl+A to select the whole document).
If you are wanting to have an external source document which holds your
phrases and if you change the "Master" phrase and have this refreshed within
your documents, this can be done several ways.
You can use Bookmark function again, ie Hyperlink to a Bookmark in the
external document. Or you can use Paste Special, Paste link, which can also
give you a link that can be refreshed to reflect changes.
Word can automatically update these links for you:
Tools, Options, General, check the "Update automatic links at Open".
Tools, Options, Print, Update Links.
These can be useful, I would suggest experiment with there usefullness for
you.
If you use links to an external document, as always beware of distributing
this document, as any recipient probably will not have you source document
and when the document is updated, the links will go to the dreaded "Error!
Reference source not found."
Before sending such documents out, you can break the links by using
Ctrl+Shft+F9 to remove the links but retain the text.
Hope this helps
DeanH