I am looking for articles for my speech class on the Power of words
Check our Databases by Subject page (link below). Check the 'Speech' tab, then go to EBSCO Academic Search Complete. Try searching for 'power words' (without quotes). Limit by Full text and by Scholarly resources. On the left, look for other possible limits, especially in the 'subject Thesaurus term' link (click on the 'Show more' link for additional suggestions)
Always consider other words you might be able to search, e.g. speech. When you find an article especially on target, check the subject headings that were assigned to that article, those may help you find more like it.