Using post codes on MyDrive webiste

LaurieSilver Registered Users Posts: 1
New Traveler
When I use My Drive on my PC and search for a post code it shows a list of places all with different post codes and often not including the one I want. How do I get the program to accept the post code I input ? Have tried settings but cannot find anything there. If i try to click "Enter" it is the same list.