Perhaps you should try some spelling variations:
communication conversations » communication conversation, communication cooperation, communication constructions
conversations basics » conversation basic, conversacion basica, conversation based
dimensional database » dimensional databases, directional database, dimensional data
dimensions database » dimensional databases, decisions database, dimensions data

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversations basics ((dimensional database) OR (dimensions database)) united~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication conversations basics ((dimensional database) OR (dimensions database)) united".
• Adding a wildcard symbol may retrieve word variants: communication conversations basics ((dimensional database) OR (dimensions database)) united*.