In contrast to most other databases, Web of Science offers guided searching on the Basic Search page.
The Timespan limit defaults to search all dates (1988-2020). Date limits include Last 5 years, Year to date, Custom year range, and more.
Click on 'Add row' to add a new row to the search field. Adding a new field also sets the second field to the AND operator. You can change the AND operator to OR or NOT.
Click on 'Reset' to clear the search box(es).