Open PDF File from a specific Page using ITextSharp Asp.net

Hi, I'm trying to open a Pdf Document from a specific page, actually what i'm trying to do is, i want to redirect the user from my application to pdf for help. If the user is on Terms & Condition Page of Web Application and he wants the help regarding Terms & Condition, then while clicking on help i want to move him to Terms & Condition Page containing in pdf file. 

I'm searching the word Terms and Conditions from the page he wants to be helped, and want to open the pdf from Terms & Conditions page (Scroll down and start page should be the page from where he clicked the Help button) 

 

Thanks