Talvez debería tentar con algunhas variantes ortográficas:
communication concepts » communication circuits, communication congresses, communication channels
lower dimensional » low dimensional, one dimensional, four dimensional
concepts lower » concepts power, concepts life, concepts laue
shared spaces » shared space, shared stocks
type spaces » state spaces

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 lower dimensional ((shared spaces) or (type spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication concepts lower dimensional ((shared spaces) OR (type spaces)).
• Adding a wildcard symbol may retrieve word variants: communication concepts lower dimensional ((shared spaces) or (type spaces))*.