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

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("national science series b:, physics") OR ("spatial science series b:, physics"))) OR ("national science stories a:, physics")).
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