Once you have established your key concepts, you can start brainstorming so called keywords. Keywords are terms of scientific colloquialisms that are used when talking about a topic. In order to get the most comprehensive search results, you need to come up with as many synonyms and other equivalent terms as possible, concept by concept. Keep in mind that you are likely to find more new search terms as your work progresses.
Use e.g. a Word file to keep your search terms and your search strings safe and up to date.
|Concept 1||Concept 2||Concept 3|
|nursing students||hand washing||skills|
|nursing pupils||hand hygiene||knowledge|
|pupil nurses||hand sanitation||know-how|
|nursing education||hand sanitization||knowhow|