The following is a list of all the shortcuts available:
user: or users: or people: or name:
(e.g., user: kelly smith will list people by that name)
application: or applications:
(e.g., application: links will list the Links application and other applications related to the term)
group: or groups:
(e.g., group: alumni will list groups related to the term "alumni")
event: or events:
(e.g., event: quinceanera will list events related to "quinceanera")
fbpage: or page:
(e.g., page: facebook security will list the Facebook Security Page as well as other Facebook Pages related to the term)
A vertical line (the | character, also known as a "pipe"):
(e.g., John Doe | Jane Doe includes both John Doe search results with Jane Doe search results in the same list; Beatles | Elvis | U2 will display people who have stated in their profile that they like any of the above artists)
Shortcuts that you can combine with other shortcuts:
user: or users: or people: or name:
sex: or gender:
(e.g., name: kelly smith sex: male or name: kelly smith gender: m will narrow down the people named "Kelly Smith" to the ones who are male)
company: or work:
(e.g., name: kelly smith company: facebook will list the people named "Kelly Smith" who work at Facebook)
relationshipstatus: or rl: or status: with the options of single, in a relationship, in relationship, in an open relationship, married, its complicated, complicated
(e.g., name: kelly smith status: married will list the people named "Kelly Smith" who are married)
y1: as the minimum age and y2: as the maximum age
(e.g., name: kelly smith y1: 30 y2: 39 will list the people named "Kelly Smith" who are between 30 and 39 years old)

I have been playing with this and its really impossible, they have pre combined text fields blocked so u cant stalk people etc, its one of their privacy policies.

I actually came up with an ingenius way of at least making sure the girls I add are reasonably local to me etc.

I found the groups for a couple of my local clubs/bars etc, as people have said they are a friend of these establishments then they must live reasonably local.

Then I just go thru and add every girl who looks like they hot. I did this originally to find a girl id met in a bar once, I thought she'd b on the facebook group and then found her lol.