Perhaps you should try some spelling variations:
"Harvard Cold War studies fuel source." » "Harvard Cold War studies cruel source.", "Harvard Cold War studies field source.", "Harvard Cold War studies from source.", "Harvard Cold War studies fuel sources.", "Harvard Cold War studies fuel resource."
"harvard cold war studies book series." » "harvard cold war stories book series.", "harvard cold early studies book series.", "harvard world war studies book series.", "harvard cold war studies books series.", "harvard cold war studies ebook series."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("harvard cold war studies book series.") or ("Harvard Cold War studies fuel source."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("harvard cold war studies book series.") OR ("Harvard Cold War studies fuel source.")).
• Removing quotes may allow a broader search: (( harvard cold war studies book series. ) or ( Harvard Cold War studies fuel source. )).
• Adding a wildcard symbol may retrieve word variants: (("harvard cold war studies book series.") or ("Harvard Cold War studies fuel source."))*.