Perhaps you should try some spelling variations:
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"national science series c:, mathematical and medical sciences" » "natural science series c:, mathematical and medical sciences", "animal science series c:, mathematical and medical sciences", "natural sciences series c:, mathematical and medical sciences", "national science services c:, mathematical and medical sciences", "national science stories c:, mathematical and medical sciences", "national sciences serious c:, mathematical and medical sciences"
"social science theories c:, mathematical and medical sciences" » "social science theory c:, mathematical and medical sciences", "social science three c:, mathematical and medical sciences", "social science theories 1:, mathematical and medical sciences"
"spatial science series c:, mathematical and medical sciences" » "spatial science services c:, mathematical and medical sciences", "spatial science stories c:, mathematical and medical sciences", "spatial sciences serious c:, mathematical and medical sciences"

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: (("national science series c:, mathematical and medical sciences") OR ((("spatial science series c:, mathematical and medical sciences") OR ((("social science theories c:, mathematical and medical sciences") OR ("social sciences theories c:, mathematical and medical sciences")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"national science series c:, mathematical and medical sciences\") or (((\"spatial science series c:, mathematical and medical sciences\") or (((\"social science theories c:, mathematical and medical sciences\") OR (\"social sciences theories c:, mathematical and medical sciences\"))))))".
• Removing quotes may allow a broader search: (( national science series c:, mathematical and medical sciences ) or ((( spatial science series c:, mathematical and medical sciences ) or ((( social science theories c:, mathematical and medical sciences ) OR ( social sciences theories c:, mathematical and medical sciences )))))).
• Adding a wildcard symbol may retrieve word variants: (("national science series c:, mathematical and medical sciences") or ((("spatial science series c:, mathematical and medical sciences") or ((("social science theories c:, mathematical and medical sciences") OR ("social sciences theories c:, mathematical and medical sciences"))))))*.