Perhaps you should try some spelling variations:
"supply costs international efforts." » "supply costs international airports.", "supply costs international energy.", "supply costs international airport.", "supply costea international efforts.", "supply counts international efforts.", "supply cases international efforts."
"supply border integration series." » "supply der integration series.", "supply merger integration series.", "supply border migration series.", "supply border integration services.", "supply border interaction series.", "supply border integration server.", "supply order integration series.", "supply under integration series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply costs international efforts.") or ("supply border integration series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply costs international efforts.") OR ("supply border integration series.")).
• Removing quotes may allow a broader search: (( supply costs international efforts. ) or ( supply border integration series. )).
• Adding a wildcard symbol may retrieve word variants: (("supply costs international efforts.") or ("supply border integration series."))*.