Perhaps you should try some spelling variations:
communication control » communication concepts, communication culture, communication channel
two dimensional » three dimensional
scaled ddspaces » scale spaces, scaled space
tuple ddspaces » tuple spaces, tuple space
control two » control tools, control time, control them
ddspaces » dddspaces
space » dspace

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication control two dimensional ((((scaled ddspaces) or (scale space))) or (tuple ddspaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication control two dimensional ((((scaled ddspaces) OR (scale space))) OR (tuple ddspaces)).
• Adding a wildcard symbol may retrieve word variants: communication control two dimensional ((((scaled ddspaces) or (scale space))) or (tuple ddspaces))*.