Perhaps you should try some spelling variations:
communication collections » communication applications, communication cohesion, communication foundations
metric multidimensional » asymmetric multidimensional
communication control » communication concepts, communication culture, communication channel
data united » data invited, data unit, 7ta united

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) or (communication collections)) metric multidimensional data united~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((communication control) OR (communication collections)) metric multidimensional data united.
• Adding a wildcard symbol may retrieve word variants: ((communication control) or (communication collections)) metric multidimensional data united*.