How can people get to my website http://www.swimlessons4you.com using search engines other than Google?

My webpage http://www.swimlessons4you.com shows up when someone uses Google to search for it but not if they use MSN, Yahoo, or AOL as their search engine. How do people get to my site if they using other search engines?  I was surprised when my mother couldn't get to it unless she used Google.  This is my first web site and I know I have a lot to learn to advertise my swimming instruction  for individuals or small groups in the Las Vegas, Henderson, Boulder City area.  I do believe that it should be easy for people to go staight to my web site but I'm just a little confused as to how I make that happen using other search engines than just Google.  Advice please??