Perhaps you should try some spelling variations:
"advances in spatial science, the regional science theory" » "advances in spatial science, the national science theory", "advances in spatial science, the regional scale theory"
"advances in social science, the natural science theory" » "advances in social science, the natural sciences theory", "advances in social sciences, the natural science theory"

Try widening your search to All Fields.

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: (("advances in spatial science, the regional science theory") OR ("advances in social science, the natural science theory")).
• Removing quotes may allow a broader search: (( advances in spatial science, the regional science theory ) or ( advances in social science, the natural science theory )).
• Adding a wildcard symbol may retrieve word variants: (("advances in spatial science, the regional science theory") or ("advances in social science, the natural science theory"))*.