Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication communication
conversation fast » conversion fast, conversation part, conversation post
dimensions index » dimensional index, dimensions under, dimensions des
dimensions sdes » dimensions des, dimensions some, dimensional sde

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversation fast ((dimensions sdes) or (dimensions index)) viveres~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication conversation fast ((dimensions sdes) OR (dimensions index)) viveres.
• Adding a wildcard symbol may retrieve word variants: communication conversation fast ((dimensions sdes) or (dimensions index)) viveres*.