Perhaps you should try some spelling variations:
communication concepts » communication circuits, communication congresses, communication channels
based dimensioning » based dimension, based dimensions, fast dimensioning
concepts based » concept based, concepts cases, concepts case
array arcing » array forming, array probing, array sharing
range angle » large angle, rake angle
arrays ang » arrays a

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

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