Boolean operators help in fine-tuning search results by defining the relationship between keywords. Here's a brief overview:
AND: Narrows the search by combining terms. For example, "diabetes AND hypertension" retrieves results that contain both terms. OR: Broadens the search to include results that contain either of the terms. For example, "diabetes OR hypertension" retrieves results that contain either term. NOT: Excludes terms from the search. For example, "diabetes NOT type 1" retrieves results that contain diabetes but not type 1 diabetes.
