How to add dynamic title in ASP.NET from database to appear in Google Search Results

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C#

C#4.0

SEO

ASP.NET4

I have a page which lists stores,malls of individual cities.
I have used the list of cities in DropDownList.
I have added dynamic title to page as like

Page.Title="Stores in"+DropDownList1.SelectedValue;

It works fine. But when I see that page in Google Search then its showing only one title like
"Stores in Delhi". Here 'Delhi' is in the default selected value in DropDownList1.
But as I have many cities in that DropDownList1, I want to show each value of DropDownList1 to be appear in search result as title according to search query.
For example if user types search query "Stores in Jaipur" then search result should show result with this title "Stores in Jaipur"
Remember that Dynamic title is working fine but question is that "How to show is in search result"