Many of us try to explain our question in terms of our need. That might work. Sometimes you need to frame your question for others. This is especially true if those 'others' are the writers and editors for a book, an online database, or e-book. What you look for then must be translated into the framework from which they are operating.
Example: I am looking for job and career information for my major in criminal justice. If I use the Occupational Outlook Handbook, I need to translate my college major into the right job categories - not look under 'criminal justice.' I would have have to find and use, for example, one of the following: Police Officers, Detectives, Probation Officers, etc. If I was majoring in psychology and wanted to work in the criminal justice area, one job is called Correctional Treatment Specialists - a case worker in the jail. By using the index and search box within OOH, I purposely ferret out these terms, read their descriptions, and see which one applies to me. Then I can continue with gathering the information I need on salary, educational requirements, job outlook data, etc.