Search form plugin for Wordpress

Hi all,
I am looking for a awesome searching form to use on my website.
For example please see the below link. On the right side you have a search form which I would like to use for the website.

Offcourse the results needs be based on relavance.

Features as mentioned below will be great;

  • range slider
  • widget for show latest search or top search
  • (google) map search
  • keyword suggestion
  • option to exclude certain posts for the search

Do you have any suggestion which plugin I need to use?