when you search in google, it result much less than before. for example: hoang thuy linh, before it has 1million result. it happen to many keyword.
hi It is just related to an algo change. They're updating all the time and they are doing as well some pruning manually. As a result, SERP are changing very often and the number of results for such or such key-expression. Another point that has an influence on the number of results is the data center where you're connected. It is not all the time the same one! HTH