Perhaps you should try some spelling variations:
communication control » communication concepts, communication culture, communication channel
based extension » based extraction
control based » control case, content based, context based
using sparse » using spss
using static » using semantic, using statistics

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 based extension ((((using sparse) or (using static))) or (using stochastic))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication control based extension ((((using sparse) OR (using static))) OR (using stochastic)).
• Adding a wildcard symbol may retrieve word variants: communication control based extension ((((using sparse) or (using static))) or (using stochastic))*.