Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
documentation based » documentation fast, documentation a, documentation center
based dispersion » wave dispersion, gas dispersion, based discussion
test lime » test time, test clive, test timed
test line » test lint, test online, test spline

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "communication documentation based dispersion ((test lime) OR (test line))~".
• Adding a wildcard symbol may retrieve word variants: communication documentation based dispersion ((test lime) OR (test line))*.