After you do a keyword search and get the results, tap on three dot icon in the top right of the screen. You will see an option "Add (key words) as a Section". Just tap on it, you will find a new section created by you. You will find it appearing in the Menu.
Please also see Q1, Q4, Q23
1) Users can tap on the search icon in the top bar.
2) Type a keyword (e.g. "Facebook") in the slot and tap on "Search".
3) After getting the search results, tap on "More".
You can then choose "Add Facebook as a new session" in the options by tapping on that line.
4) You can tap the Menu and find a new section called "Facebook" created by you among all sections.