"i don't have any knowledge about this can please tell me how implement it?"
So what's the first thing you do when you don't know something? Research.
Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...
A very quick search using your a chunk of your question as the search term
gave over 3 million hits: Google: "search options in our website"
The top hit is Google itself: Make searching your site easy
] but the other links are pretty relevant too.
In future, please try to do at least basic research yourself, and not waste your time or ours.