Perhaps you should try some spelling variations:
communication cohesion » communication collections, communication control, communication apprehension
communication cost » communication cross, communication case, communication control
based extension » based extraction
extension a49 » extension a, extension 9, extension act
livres » lives, livre

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication cohesion) or (communication cost)) based extension a49 livres~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((communication cohesion) OR (communication cost)) based extension a49 livres.
• Adding a wildcard symbol may retrieve word variants: ((communication cohesion) or (communication cost)) based extension a49 livres*.