ProQuest is a Collection of Periodicals (Magazines, Newspapers, Journals, etc.). It is AWESOME! But, because there is so much information contained in it, you must use the Advanced Search to find information.
Here is an example of an Advanced Search using Keywords:
A list of words that will help you find information in all of your sources are called keywords. They are like synonyms and related words to your topic.
Use an online Thesaurus to look up synonyms to your main concepts.