You find a list of the project hosted on this site in the menu to the left. Some projects may be restricted to logged in users or only a group of logged in users.
Use + and - as a prefix to include or exclude a word from the search; + is implicit. Example a search for all documents containing the word weather and not the word forecast
Use ”” around your expression to search for an exact match for that phrase
Restrict search into a project namespace like this, where «project» is the namespace name