Perhaps you should try some spelling variations:
surfaces extension » surfaces tension, surface tension, surface expression
information a » information age
array sharing » array string, arrays bearing, array imaging
array using » arrays using
array fermi » array forming, array format
a surfaces » a surface, 2 surfaces, 8 surfaces

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

• Performing a fuzzy search may retrieve terms with similar spellings: information a surfaces extension ((((array sharing) or (array using))) or (array fermi))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information a surfaces extension ((((array sharing) OR (array using))) OR (array fermi)).
• Adding a wildcard symbol may retrieve word variants: information a surfaces extension ((((array sharing) or (array using))) or (array fermi))*.