Specific search plugin

Hello,everyone i would like to ask you a question about a plugin…

So can somebody offer me a plugin where you place it in a certain page like ‘Search’ but only to be able to search for selected by me pages…

I will give an example

If we have a ‘Food’ page,then i have made all those food product pages one by one and i want a search option only for those food products.
Like when i type there ‘Bread’ to find me the bread page only,and when i type ‘Br’ to automaticially show the ‘Bread’ page and if other pages starting with ‘Br’.

I hope you get me mates,i would be glad if someone help me. ??
Thanks alot.