To get an idea of whether you should continue to run a Search Network campaign on search partner sites, you can:

Question

Accepted Answer

segment the campaign’s data by network and evaluate its performance on search partner sites

Answer

use Keyword Planner to evaluate how the campaign might perform better on search partner sites

Answer

review the top movers report to see if the campaign is getting more clicks on search partner sites

Answer

evaluate the campaign’s performance on search partner sites vs. display partner sites