Use the Find command to locate all email messages in your Inbox (and in its subfolders) which display the word Secretary in their subject fields (do not close the Find dialog window).
Use the Find command to locate all email messages in your Inbox (not in its subfolders) sent by Despina, which display the word Infolearn in their subject field (do not close the Find dialog window).
Use the Find command to locate all email messages which appear in the Personal Folders_test4u folder and in its subfolders, are sent to Infolearn and contain the word Free in their subject (do not close the find dialog window).