Perhaps you should try some spelling variations:
communication skill » communication skills, communications skills, communication social
database optimising » databases optimizing, data optimising, database optimized
bartram optimizing » camera optimizing, data optimizing
skill incision » small incision, skin incision, small incisions

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

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