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This is one example that shows you what you can do with truncation (with the asterisk), Boolean Operators (AND), Material Type (Books), Language (English), and Publication Date (Last 10 years) to search books that deal with topics about persuasion (or persuasive) speech (or communication) in English last 10 years.
This is one example that shows you how to find articles about persuasive speech. If you click "Cited by", you will find more recent articles relevant to your topics.
This is one example that shows you what kinds of tricks you can use to find more reliable web resources preventing from too many search results. Find more tricks from here.