The phrase "closer look" means to take a more detailed or careful examination of something. It implies that there is more information available, and by taking a closer look, one can gain a better understanding of what they are observing. This expression can be used in various contexts such as when analyzing data, inspecting an object, studying a situation, or reviewing a document. Essentially, it means to pay attention to the details and take the time to examine something more closely for greater clarity.