When developing a search strategy, it is useful to combine different search approaches. Each approach serves a different purpose, and using them together will give you a more complete and reliable set of sources.

A quick search is often the best place to start. This involves simple searches in tools like library databases or search engines to get an overview of your topic. At this stage, you are not aiming for perfect results, but for orientation, identifying key themes, important authors, and useful keywords. A quick search helps you understand how your topic is discussed and gives you a foundation for more systematic searching.

Chain searching (also called reference searching) builds on sources you have already found. When you read a relevant book or article, you look at its reference list to see which sources the author has used. This allows you to trace the research backwards and discover important earlier works. Chain searching is particularly useful in history, where key texts and primary sources are often reused and discussed across multiple studies.

Closely related is citation searching, which works in the opposite direction. Instead of looking backwards at references, you look forward to see who has cited a particular source. Many academic databases allow you to track citations, helping you find newer research that builds on or responds to earlier work. This is a powerful way to follow academic debates and identify how interpretations of a topic have developed over time.

Block searching is a more structured and systematic approach. Here, you break your topic down into key concepts (or “blocks”) and then identify several keywords or synonyms for each concept. You then combine these using Boolean operators. For example, if your topic is about propaganda in World War I, one block might include “propaganda” OR “mass communication,” while another might include “World War I” OR “First World War.” These blocks are then combined using AND. This approach helps ensure that your search is both broad (through synonyms) and precise (through combination of concepts).

In practice, you will often move between these approaches. You might begin with a quick search, use chain and citation searching to expand your material, and then apply block searching to conduct a more thorough and systematic search. Together, these methods support the idea that academic information searching is a circular and evolving process, where each step helps refine the next.