When searching for information on crisis communication, consider the audience of the database you are searching in addition to the alternate terms related to crisis communication. For example, crisis management may sometimes be referred to as risk management, and searching both of these terms may return a larger pool of results depending on what database you are in. To help generate more keyword ideas, try to locate the thesaurus of a database which is usually located either on the top ribbon of the search page, or in the advanced search section of a database.
names of modern crisis events (e.g. COVID-19, BP Deepwater oil spill, hurricanes, tsunamis, etc.)
"crisis managment" AND "social media"
("crisis management" OR "disaster planning" OR "risk management") AND oil