Perhaps you should try some spelling variations:
communication communications » communication communication, communication communicating, communications communication
communications general » communication general, communications generic, complications general
general dimensions » several dimensions, central dimensions, generic dimensions
array arcing » array forming, array probing, array sharing
array string » array strong, arrays strings, array sharing

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication communications general dimensions ((array arcing) or (array string))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication communications general dimensions ((array arcing) OR (array string)).
• Adding a wildcard symbol may retrieve word variants: communication communications general dimensions ((array arcing) or (array string))*.