Facebook's privacy settings can be a handy tool for keeping your information visible to the right people. For example, you can hide your profile from appearing under the results of a general name search. But privacy settings can also be an inconvenience -- for example, when you try to find someone who you know would accept your friend request. There is a way to bypass this obstacle and send a person with a hidden profile a friend request.
Think of probable mutual Facebook friends, such as mutual real-life friends, coworkers or family members. If mutual Facebook friends aren't available, think of people the person with the hidden profile knows in real life and search for them until you find someone with a public Facebook profile.
Navigate to the Facebook page of an available acquaintance and select the "Friends" tab under his profile picture. A list of the person's friends appears in place of the "Wall" on the right, as well as a search bar immediately above the list.
Type in the name of the person you're trying to find in the friend's list. If she is friends with the person whose list you are searching, her name will appear as a result on the list. Click on the name to navigate to an extremely limited profile page where you can click the "Send Friend Request" button.