Perhaps you should try some spelling variations:
through integration » through integrated, through international, through innovation
integration theory » integration through, information theory, innovation theory
irrigation scheme » irrigation systems
surge irrigation » large irrigation, surface irrigation, scale irrigation
supply surge » supply curve, supply sources, supply curves

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• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply surge irrigation scheme. ) OR ( support through integration theory. ))~".
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