Don't start with Google to do your research. You aren't going to find the scholarly sources that are best for your research there because scholarly research costs money and isn't freely available online for the most part. Luckily, the library pays to access a lot of scholarly research and makes it available through a variety of different search tools.
Search everything searches does just what it says - it searches all of the library's collections at once. This can be great to get a comprehensive overview of what is out there on your topic but it can also be a little overwhelming because there is so much. It is a great place to start your research.
If you want to narrow down your search a little more, you can do a search in one database at a time. Here are some that I recommend for anthropology research.
Google Scholar is another resource for finding scholarly research. Look on the right hand side of the screen for the "Full-Text@MCLA" links that will bring you to the article in one of our databases. You can also look for the free PDFs listed on the right hand side. The best tool in Google Scholar is the citation link under each result. This will show you other articles that cited that article in their references. If you find a great article, be sure to check what else has cited it for more relevant results.