Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication communication
conversation energy » conversion energy, conservation energy, condensation energy
energy provision » general provisions, energy production, energy decision
basic linear » quasi linear

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversation energy provision ((basic linear) or (basic life))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication conversation energy provision ((basic linear) OR (basic life)).
• Adding a wildcard symbol may retrieve word variants: communication conversation energy provision ((basic linear) or (basic life))*.