Search from grid view and display multiple records

Question

So I am trying to make a program that allows me to search within a gridview, and then display the searched values. Currently, I can only display 1 record at a time. If I were to search for another record, it is still able to  display that record, but then it will replace the first record instead. So no matter how many time you search, you will only see 1 row of gridview being displayed as it kept replacing the values inside the row everytime you make a new search.

 

What I want to do is that I can search multiple times, but instead of just displaying only 1 row, it can display multiple rows according to what you have searched for. Thanks in advance.