Perhaps you should try some spelling variations:
national science » natural science, animal science, natural sciences
medical sciences » social sciences
science series » science services, science stories, science theories
social science » social sciences

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 series 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 series 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 series c:, mathematical and medical sciences ))))*.