Perhaps you should try some spelling variations:
"national science communication" » "animal science communication", "natural sciences communication", "educational sciences communication"
"spatial science communication" » "social science communication"
"natural science communication" » "natural sciences communication"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("national science communication") OR ("spatial science communication"))) OR ("natural science communication")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"national science communication\") OR (\"spatial science communication\"))) or (\"natural science communication\"))".
• Removing quotes may allow a broader search: (((( national science communication ) OR ( spatial science communication ))) or ( natural science communication )).
• Adding a wildcard symbol may retrieve word variants: (((("national science communication") OR ("spatial science communication"))) or ("natural science communication"))*.