1) The document discusses Boolean logic and operators that can be used to refine searches on search engines, applicant tracking systems, and resume databases. It defines Boolean operators like AND, OR, NOT, and parentheses and how they combine keywords.
2) It provides examples of Boolean syntax like intitle:, inurl:, and site: to search within page titles, URLs, or a single domain.
3) The document suggests that using multiple search engines, context keywords, industry focus, and automated Boolean tools can help create more targeted and effective Boolean searches.