For keyboard shortcuts to work you must first enable them.
Go toSettings>See all prefs>Keyboard shortcuts>Keyboard shortcuts on.
Pressgand thenl(a lowercase L).

The focus jumps to the search bar at the top of Gmail.
Enter the name of the label.
Use theUpandDownarrow keys to highlight the label you want to open.

PressEnterto view the emails in that label.
Press thespacebarafter the label name and enter the text that you want to search for within the label.
There are many ways tosearch for emails in Gmail.

Other Ways to Search Emails in Labels
Gmail lists labels on the left side of the screen.
This makes opening them easy, and searching is as straightforward as typing in the search box.
Replace with a real name, likelabel:bankto initiate the Gmail label titled “Bank.”

Gmail labels can also be opened using theirURL.
For example, a label called “Deals” can be opened by visiting https://mail.google.com/mail/u/0/#label/deals.
Gmail labels are notcase sensitive.
TypingbankorBANKfinds the same emails.