How Google Search works
Using Google Search's Advanced Search feature on Google to limit your search results to education websites only as follows:
Notice how all the search results now come from a website with .edu as the domain extension. A domain extension is a two- or three-character code indicating the country or category assigned to a website such as .edu (education).
The domain extension can be an indicator of a site's credibility, but not always. Even though you have now narrowed your search results to just .edu sites where you will be more likely to find academic information, you will still need to examine each site using the tips in the CRAAP Test to make sure it is credible before using the information in your paper.
Google Scholar searches for scholarly articles, reports, dissertations, theses, patents, and other documents.
A search of Google Scholar will generate a list of citations.
From these citations you can:
Full text links are provided if:
"Google Scholar aims to rank documents the way researchers do, weighing the full text of each document, where it was published, who it was written by, as well as how often and how recently it has been cited in other scholarly literature." The most relevant results will always appear on the first page. (http://scholar.google.com/intl/en/scholar/about.html).
Click the ▼ next to the search box to access the advanced search options.
Enter "b-lactams" and "allergic reaction" in the first search box labeled "with all the words" .
Using the options on the left sidebar you can limit your results by:
Tip: You can also set up alerts to let you know when new articles matching your search appear!