Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
documentation basics » documentation basic, documentation based, documentation asia
basics dimensions » basic dimensions, physics dimensions, based dimensions
entrees linear » engineers linear
trees linear » less linear

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 basics dimensions ((trees linear) or (entrees linear))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication documentation basics dimensions ((trees linear) OR (entrees linear)).
• Adding a wildcard symbol may retrieve word variants: communication documentation basics dimensions ((trees linear) or (entrees linear))*.