Could google scholar replace other search engines?

inempty

We have many engines to search the literature, such as sciencedirect and so on. And we also have google scholar to search the whole literature. Is it a good idea to use only google scholar since it looks complete enough? What's your opinion?

Andre

Maybe. I prefer sciencedirect when I know what I'm looking for usually quicker with sciencedirect than with scholar google, which finds a lot more, but you may have to scan more before you spot the right one.

Example scholar google, Example Sciencedirect

Kholdstare

Nopes. It also does not find some articles.