Newzie enables you to search inside all stored content as well as the help documentation. In order to search, just type your search query into the search bar located at the top of the main screen, as shown below, and hit the 'ENTER' button to start searching.
When it starts, progress level of the search process emerges in the search bar along with the cancel button, which enables you to cancel that search while in progress. Following sample screenshot shows the search bar while search is in progress.
When search process is finished, a new tabbed-window is opened in the Tabs Panel and all found posts are listed one after another based on their publication date, starting from the most recently posted one. Newzie also highlights those searched words in those listed posts.