You develop search strategies whenever you have an information need. For instance, if you are about to purchase a new cell phone, you will need to know how to find information on all types of cell phones. You don't want information about the history of cell phones, or how to use them safely when driving, but you would need information on battery life, storage space, and camera quality.
When looking for your own information need or for an assignment, you want to find the information you need quickly. Remember to plan your search strategy. A little planning will save you time. Now let's look at your research assignment.