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

You may be able to get more results by adjusting your search query.

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