Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
based integration » based integrated, based intervention, based information
euclidean minisum » euclidean minimum, euclidean rings
based extraction » based interaction, phase extraction, based education

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication documentation ((based extraction) or (based integration)) euclidean minisum~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication documentation ((based extraction) OR (based integration)) euclidean minisum.
• Adding a wildcard symbol may retrieve word variants: communication documentation ((based extraction) or (based integration)) euclidean minisum*.