Google has some tips and tricks for getting targeted search results.
Google Scholar is an excellent resource for finding scholarly articles, journals, books, theses, dissertations, technical and research reports, and court opinions and patents. Below are some tips in refining your search results in order to get highly relevant content:
Your search results are normally sorted by relevance, not by date. To find newer articles, try the following options in the left hand menu of your results list:
One of the most useful for this assignment is to search within a domain extension.
Here are some examples using the death penalty topic: