Perhaps you should try some spelling variations:
"natural sciences communication" » "natural sciences communications", "natural science communications", "natural sentences communication"
"spatial science communication" » "social science 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: (("natural sciences communication") OR ("spatial science communication")).
• Removing quotes may allow a broader search: (( natural sciences communication ) or ( spatial science communication )).
• Adding a wildcard symbol may retrieve word variants: (("natural sciences communication") or ("spatial science communication"))*.