One way of doing this is to open Quote app in Eikon, type in ARGENTINA and hit Enter. Then from the country page displayed navigate to the content of interest by double-clicking on a code within angle brackets. E.g. for Argentine futures and options double click on <AR/FUTEX1>, for bonds double click on <AR/DEBT>.
If you have further content search and explanation questions, the best resource is Thomson Reuters Helpdesk, which you can reach by either calling the Helpdesk number in your country or by using Contact Us capability in Eikon application.