Do chuardach - "((children study) or (child study)) and teaching (mathematics." OR mathematical.")~ - níor mheaitseáil seo acmhainn ar bith.
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- If you are trying to use Boolean operators, they must be ALL CAPS: "((children study) OR (child study)) AND teaching (mathematics." OR mathematical.")~.
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- Adding a wildcard symbol may retrieve word variants: "((children study) or (child study)) and teaching (mathematics." OR mathematical.")*.