Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
dimensional regression » dimensional reduction, dimensional television, dimensional representation
dimensions impression » dimensions session, dimension dimension
documentation fast » documentation a, documentation _

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

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