One of the many things I learnt about women/dating/relationships,etc is the mutual rule.If a woman isnt interested in you,move on.When you do meet someone who does like you,thats the one to get to know.

If a woman does look at you,move on.
This also applies when a woman looks at you and you're not interested,she needs to move on.
When you look at a woman and she looks at you,thats a good start.
You can then say "Hi,my name is......,I just wanted to meet you.The least she can do is say hi.She should introduce herself by saying her name.Then try have a chat to get to know each other.
Remember the mutual rule:
If its not mutual,move on.You're preventing the right ones from meeting you who would genuinely like to get to know you.This way you devote more time to finding the right ones and that gives you a better chance at success.

Hope this helps.

Regards Chris.