add a search field which search for values of specific field in a content type
You can create a separate Search Page using Views: Here is a tutorial (http://webwash.net/tutorials/how-create-search-pages-using-views-drupal-7)

Views:


  You like the default front page view, but you find you want to sort it differently.
  You like the default taxonomy/term view, but you find you want to sort it differently; for example, alphabetically.
  You use /tracker, but you want to restrict it to posts of a certain type.
      You like the idea of the 'article' module, but it doesn't display articles the way you like.
      You want a way to display a block with the 5 most recent posts of some particular type.
      You want to provide unread forum posts.
      You want a monthly archive similar to the typical Movable Type/Wordpress archives that displays a link to the in the form of
  Month, YYYY (X) where X is the number of posts that month, and
  displays them in a block. The links lead to a simple list of posts for
  that month. 
  
  Views can do a lot more than that, but those are some of the obvious
  uses of Views.