" " , *
To search for specific phrases, enclose them in quotation marks. The database will search for those words together in that order.
Examples:
"environmental migrants"
“climate change"
To search for variations of a word, add the symbol for truncation, usually a * where you want to allow for variation.
Examples:
migrat* = migrate, migrating, migration, migrated, etc.
environm* = environment, environmental, environmentalism, etc.