You should use both open and closed questions because when using open questions you’ll receive a clearly explained answer that includes depth and detail. Then when using a closed question you’ll receive a quicker direct answer that gets straight to the point. Therefore you should both types of questions to get a variety of answers to your question.
You should use Google search tips because it will perform the task you requested quicker and easier. An example of a google search tip is the minus sign tip, this tip allows you to exclude a word from being included in your search. A second tip is the quotation mark tip, when adding quotation marks around your search it will search it according to the exact phrase that was typed.