Perhaps you should try some spelling variations:
communication foundation » communication education, communication communication, communication information
based dispersion » wave dispersion, gas dispersion, based discussion
based dimension » basic dimensions, based extension, based diffusion
20 figures » 203 figures, 24 figures, 27 figures
2 figures » 24 figures, _ figures, 7 figures

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication foundation ((based dimension) or (based dispersion)) ((20 figures) OR (2 figures))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication foundation ((based dimension) OR (based dispersion)) ((20 figures) OR (2 figures)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication foundation ((based dimension) or (based dispersion)) ((20 figures) OR (2 figures))".
• Adding a wildcard symbol may retrieve word variants: communication foundation ((based dimension) or (based dispersion)) ((20 figures) OR (2 figures))*.