It is important to evaluate the articles/papers you find to make sure they are of a high quality. Sometimes you will be asked to use peer reviewed journal articles. See the following video and brief "How to" guide for help.
Make a list of key concepts that relate to your topic
Combine these keywords using the search connectors OR, AND
Use this symbol * to find word variations e.g. stor* will find store, stores, storage...
Use double quotes for phrases "artifical intelligence"
Search example: heat OR energy
stor* OR battery*
For more help try some of the short Library guides below: