Pre-populate Search

We would like to bring up a Search page in Workspace with the Search Criteria pre-populated.

Essentially, we want to Enter Search Criteria of "12345" (some custom text) and click the Search button - but bring up that result page immediately, without the user having to do anything.

I'm looking for something like a URL of
http://k2/k2v3/workspace/Search.aspx?txtPhrase=12345
(the above doesn't work, though).

Thank you!