Perhaps you should try some spelling variations:
communication relation » communication relations, communication relational, communication relating
based interaction » based interactive, based integration, based intervention
relation based » correlation based, location based, equation based
array string » array strong, arrays strings, array sharing
array fermi » array forming, array format
arrays a » arrays _

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

• If you are trying to use Boolean operators, they must be ALL CAPS: communication relation based interaction ((((array fermi) OR (array string))) OR (arrays a))~.
• Adding a wildcard symbol may retrieve word variants: communication relation based interaction ((((array fermi) or (array string))) or (arrays a))*.