Developing a comprehensive search strategy is an iterative (circular) process.
Use scoping searching to discover key terminology, then adapt and rerun searches until you reach the point where you have a comprehensive but precise search strategy.
Techniques for developing a search strategy:
Watch this short video on how to mind map by creator Tony Buzan
Use the following worksheet to help you map out your search:
It may be better to split certain phrases to search for them as two separate concepts instead of one. This will depend on how they are written in the literature. For example:
If you think you will split a phrase consider whether you will add it:
Proximity operators finds concepts within a certain amount of words, proximity, from each other. This symbol can vary between databases.