Perhaps you should try some spelling variations:
communication adhesion » communication cohesion, communication aggression, communication affection
dimensional databases » multidimensional databases, dimensional data, dimensional analysis
dimensional datasets » dimensional data, dimensional case
adhesion all » adhesion cell, adhesion a, adhesions cell

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication adhesion all ((dimensional databases) or (dimensional datasets)) optimising~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication adhesion all ((dimensional databases) OR (dimensional datasets)) optimising.
• Adding a wildcard symbol may retrieve word variants: communication adhesion all ((dimensional databases) or (dimensional datasets)) optimising*.