I have an eshop (see my signature) , and before 10 days i changed the title of some products by adding next to model number , some other model numbers .
For example "battery nokia 3310" changed to "battery nokia 3310 3330 3410 3510 3530 6650 5800 6810"
The problem is that , before the change , the product was at the first result at Google.gr and now it never appears. The same happened also to all products who changed their name.
What can i do for that?