It isn’t harvesting results from Google & Yahoo

Hi, I am using 10 proxies from and after adding them I select Bing, Google and Yahoo to harvest the links.

It is only harvesting from Bing while Google and Yahoo have status as ‘Harvesting’ with zero results.
Here is the custom harvester:

These are my settings:

Harvester is set at Custom Harvester

I don’t know what seems to be the issue here

I would appreciate any help in getting started