Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
documentation hat » documentation fast, documentation data, documentation a
hat dimensions » hat dimension, data dimensions, head dimensions
slow waves » slow wave, slow wage
snow wave » slow wave, snow water, new wave

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 hat dimensions ((slow waves) OR (snow wave))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication documentation hat dimensions ((slow waves) OR (snow wave))".
• Adding a wildcard symbol may retrieve word variants: communication documentation hat dimensions ((slow waves) OR (snow wave))*.