Perhaps you should try some spelling variations:
"surface and surface science, tin films" » "surface and surface science, n films"
"surface and surface science, thin films" » "surface and surface science, think films", "surface and surface science, than films"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"surface and surface science, tin films\") OR (\"surface and surface science, thin films\"))".
• Removing quotes may allow a broader search: (( surface and surface science, tin films ) OR ( surface and surface science, thin films )).
• Adding a wildcard symbol may retrieve word variants: (("surface and surface science, tin films") OR ("surface and surface science, thin films"))*.