You need to save the information that you want to view on returning to the form page. This can be done in several ways.
1: transfer the data string in the search component of the outging and incoming
URL ...?abcde. You can then retrieve it when the incoming page loads.
2: make your form page part of a frameset with the left column of the frameset hidden. You do this with cols="*,100%". The form page then fills the viewport completely but you can still save info to the hidden column. This is available as soon as the main page is re-loaded into the other part of the frameset.
3: Store the info in a cookie. Some people may have cookies turned off.
Once the incoming page is loaded you can take the saved data and re-populate the form.