Perhaps you should try some spelling variations:
communications regulations » communications regulation, communications revolution, communications simulation
regulations basic » regulation basic, regulations asia, regulations bs
basic dimensions » based dimension, pacific dimensions, design dimensions
array paving » array planning, array imaging, array probing
array ang » arrays ang, array along, array 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: communications regulations basic dimensions ((((array ang) OR (array paving))) OR (arrays a))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communications regulations basic dimensions ((((array ang) OR (array paving))) OR (arrays a))".
• Adding a wildcard symbol may retrieve word variants: communications regulations basic dimensions ((((array ang) OR (array paving))) OR (arrays a))*.