What Search engines work best when Scraping

HI

i was wondering what search engines are workign best for you when scraping..

for the last few months ive been using only 14 (If i recall correctly I disabled the others because I would get 0 results from them)

You can see the ones I work with in the attached image.. just wondering if im missing out not activating any of the others...or if your having success with any of the ones im not using

Thanks

  harvester.PNG (Size: 53.5 KB / Downloads: 2)