Perhaps you should try some spelling variations:
communication conversational » communication conversation, communication international, computation conversational
conversational data » conventional data, conversational case, conversational hand
decision david » decisions david, decision aid, decision based
data decision » a decision
david li » david l, david la, david lee

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversational data decision david li~.
• Adding a wildcard symbol may retrieve word variants: communication conversational data decision david li*.