Search for content using the search bar of any Topic.
In any Topic, there is a search bar located on the bottom of the Topic banner.
From there, use the Search Bar to type the content you would like to find within that Topic. If you have scrolled below the banner, the search bar appears at the top of the screen to the left of the Hamburger Menu.
Note: Topic search queries will pull from the content in Posts as well as Post titles.