Once in the tabbed view of the Search Terms, you can filter the results either by search term or campaign, with these filters applying to all of the tabs.
Filtering by Search Term
You can filter the results by typing free text into the Search Term filter. This filter then applies to all of the tabs
Filtering by Campaign
You can filter the results by one or more campaigns using the Campaign filter dropdown.
Type into the box to find the campaign
Click the name or press enter once the right one is selected
It will be added to the filter
You can then add more campaigns using the same process
Once you have found the Search Term you can Action it.