Use AND / OR to join search terminology.
- OR - joins similar terms / terms that get at the same issue - BROADENS
- AND - joins dissimilar terms - NARROWS
Examples: Using OR
- "solar panel" OR "photovoltaic cell"
- hydropower OR "hydroelectric energy"
- "dry steam power station" OR "flash steam power station"
- "wind energy" OR "wind power" OR "wind turbine"
Examples: Using AND
- "geothermal energy" AND "storage"
- "hydroelectric power" AND generation AND turbine
Examples using AND & OR
Sample Search A
"solar panel" OR "photovoltaic cell"
AND
"power generation"
Question: What strategy might we take if Sample A returns too many results? How could we modify this search?