How to find all the files containing all the words of a list anywhere in them?

list="hello world"
for i in $list; do
 cmd="$cmd | xargs -0 grep -l $i";
eval $cmd

(not tested with files containing spaces; -0 should take care of that, but don’t take my word for it. (oh, and it’s “minus zero”, for you with crappy fonts out there))

You may replace ls with find if you’re searching through a tree.