Search all records in 3 columns via a userform and display the results in my listview

I have been able to, with the kind help and assistance of various resources in this forum, managed to create a userform that will search selected columns in my workbook via a userform and display the results in a listview.

I am trying to amend this so that I can search through all columns and display the results on my userform listview and not having to select a specific column.

I attach my workbook to where I have managed to get upto so far and am asking whether anyone knows how I can amend the code so that the searcg works for all columns, not just the one that I select via my combobox.

Please can anyone assist me with any help or guidance?

Many thanks for taking the time to read my post, it is much appreciated.