Perhaps you should try some spelling variations:
"national science series b:, physics" » "natural science series b:, physics", "spatial science series b:, physics", "animal science series b:, physics", "national science services b:, physics", "national science theories b:, physics", "national sciences serious b:, physics", "national science series 1:, physics", "national science series 10:, physics", "national science series 11:, physics"
"national science series 2:, physics" » "natural science series 2:, physics", "spatial science series 2:, physics", "animal science series 2:, physics", "national science services 2:, physics", "national science theories 2:, physics", "national sciences serious 2:, physics", "national science series 3:, physics"
"national science stories 2:, physics" » "natural science stories 2:, physics", "spatial science stories 2:, physics", "animal science stories 2:, physics", "national science studies 2:, physics", "national science theories 2:, physics", "national science stories _:, physics", "national science stories a:, physics", "national science stories c:, physics"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("national science series b:, physics") OR ((("national science series 2:, physics") OR ("national science stories 2:, physics")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"national science series b:, physics\") or (((\"national science series 2:, physics\") OR (\"national science stories 2:, physics\"))))".
• Removing quotes may allow a broader search: (( national science series b:, physics ) or ((( national science series 2:, physics ) OR ( national science stories 2:, physics )))).
• Adding a wildcard symbol may retrieve word variants: (("national science series b:, physics") or ((("national science series 2:, physics") OR ("national science stories 2:, physics"))))*.