Google Scholar has many positive points:
..... and also some drawbacks
Google Scholar casts a wide net when searching. This means that you will want to make your search very specific to find the most relevant articles. Using the Advanced Search feature is an easy way to narrow your results.
This tutorial will quickly show you some of the highlights of Google Scholar Advanced Search.
Screen shots below give you an image of the Google Scholar Advanced Search options.
The Google Scholar advanced search screen