Perhaps you should try some spelling variations:
communication adhesion » communication cohesion, communication aggression, communication affection
database optimising » databases optimizing, database optimized
all directional » a directional, le directional, scale directional
data optimising » data optimizing, metadata optimising, datalog optimizing
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 directional ((database optimising) OR (data optimising))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication adhesion all directional ((database optimising) OR (data optimising))".
• Adding a wildcard symbol may retrieve word variants: communication adhesion all directional ((database optimising) OR (data optimising))*.