Perhaps you should try some spelling variations:
visualization efficient » visualization efficiency, minimization efficient, scalarization efficient
efficient searching » efficient teaching, efficient search, efficient caching
array string » array strong, arrays strings, array sharing
array along » arrays long, array arcing, array paving
array long » arrays long, array strong

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

• Performing a fuzzy search may retrieve terms with similar spellings: information visualization efficient searching ((((array long) or (array along))) or (array string))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information visualization efficient searching ((((array long) OR (array along))) OR (array string)).
• Adding a wildcard symbol may retrieve word variants: information visualization efficient searching ((((array long) or (array along))) or (array string))*.