1. From the Simple Search Form:
   Select Keyword.
2. Type cyberwar.
3. Click on Search Everything

Scan the results and choose one that appears to be on the current topic; click on Details..

Look at the subject headings. You may need to scroll down the record to find Subject (LC).

Jot down the ones you would like to use later in Subject searches, e.g., information warfare.

Try clicking on the linked subject headings, and see what you get. Click on the Details box for one of the records in this list.

If you click on the link "Find more on these topics" in the left hand column of the detailed record, the result will be all records that have any of the subject headings listed in the Subject (LC) fields (in other words a new search is formed with the boolean "or" between each of the listed subjects)