Perhaps you should try some spelling variations:
communication channel » communication channels, communication case, communication challenges
pattern dispersion » matter dispersion, water dispersion, scattering dispersion
dispersion chapter » diversion chapter, _ dispersionchapter, dispersionchapter 5
channel pattern » change pattern, channel partners, change patterns
chapter layer » water layer

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication channel pattern dispersion chapter layer~.
• Adding a wildcard symbol may retrieve word variants: communication channel pattern dispersion chapter layer*.