Perhaps you should try some spelling variations:
communication location » communication vocational, communication education, communication section
based discussion » brief discussion
location based » application based
array arcing » array forming, array probing, array sharing
array range » ray range
arrays a » arrays _

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

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