How to compare the string word by word with form heading?

Question

Hiii
i am making a window application in C#, in which i want to compare the entered string word by word with the form heading(text property).

I mean when user enter the string, then on button click system should match each word of the string to the heading of the form.

If suppose form heading is of 20 words, and if around 12-15 words of the entered string will match with the heading of the form , then system should show that particular form.

Kindly help me in this, kindly provide me code , if possible....