Perhaps you should try some spelling variations:
communications convention » communications connections, communication connection, communication conversation
convention based » contention based, conversion based, conversation based
based excision » base excision, based exclusion, based decision
excision from » exclusion from, excitation from, decisions from
from river » from liver, from rice

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

• Performing a fuzzy search may retrieve terms with similar spellings: communications convention based excision from river~.
• Adding a wildcard symbol may retrieve word variants: communications convention based excision from river*.