The "All mail" folder contains absolutely everything, including the content of the Spam folder and the trash.
In the All mail "folder", each message have a tag indicating where it currently reside. Check that tag, it's very informative.
As X said, take a look in the junk/Spam folder.
There are SO MANY unlegitimate, ie. spammy, e-mails about cruises and similar subjects that those probably got intercepted by the Spam filters.
Electro, August 2015