in my experience, "/ugo" and "-ugo" do not work, even though gnu findutils manpage suggests they will. I have to structure string this way on OpenSuSE 'leap' for, say 'read only':

# find path/to/files/ -user $(whoami) -perm 444
 - or -
# find path/to/files/ -maxdepth 1 -user landis -perm 444