While Google searches the entire Web, Google Scholar limits its searches to only academic journal articles produced by commercial publishers or scholarly societies. Google Scholar eliminates material from corporations, non-scholarly organizations, and from individuals. Google Scholar is another way to find academic/scholarly articles on just about any subject and is especially useful when the topic being researched is multidisciplinary.
ISO (International Standard) country codes are one way to format Google searches in order to more specifically focus your queries. The ISO country codes are internationally recognized codes that designate every country and most of the dependent areas as a two-letter combination or a three-letter combination. It is like an acronym that stands for a country or a state.
Using codes saves time and avoids errors as instead of using a country’s name (which will change depending on the language being used), we can use a combination of letters and/or numbers that are understood all over the world.
For example, all national postal organizations throughout the world exchange international mail in containers identified with the relevant country code. Internet domain name systems use the codes to define top-level domain names such as “.fr” for France, “.au” for Australia.