Generates results that contain both of your search terms.
ex. Industrialization AND Urbanization
Results will only show materials that contain industrialization and urbanization. This can be used to specify terms that are critical to your research topic, such as limiting your search to a certain geographical region or discipline area.
AND is used to narrow your search & generates fewer, more specific results.
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Generates results that contain one, or both, of your search terms.
ex. Train OR Railway
Results will show materials that contain either train or railway. This can be used for geographical locations or topics that may not have a standardized name, such as "United States" OR u.s. OR America OR "United States of America"
OR is used to broaden your search & generates greater, less specific results.
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Generates results that do not contain one of your search terms.
ex. Industrialization NOT Factory
Results will show materials that contain industrialization but do not mention factory. This can be used to exclude materials that may pertain to your subject, but are related to a region, discipline, or topic that you are not trying to study.
NOT is used to narrow your search & generates less results. BE CAREFUL. Sometimes NOT can exclude relevant results.
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