Phrase:Returns all topics that contain the exact phrase in the search criteria. Use quotation marks around the phrase. Ex."system administration"
And:Returns all topics that contain all the words in the search criteria, in any combination. Insert a plus sign between all words in the search criteria. Ex.system + administration
Or:Returns all topics with any combination of words in the search criteria. This is the default. Ex.system administration
Hubs
Hubs provide you with a set of tools, applications, and reports to help you manage all aspects of your data.
The first time that you open a hub, an introductory message displays, explaining the hub's functionality and the available options.