Following are the main five types of search options available in ServiceNow:
Lists: These are used to find records in a list.
Global Text search: It helps us to record in multiple task tables from a single search field.
Knowledgebase: It helps us to find knowledge articles.
Navigation filter: It is used to allow us to filter the items in the application navigator.
Search scenes: It is a custom module that is created only by administrators.
