Replace your comment block with something like

while( <FILE> ) {
    print "Found $1 in $file; line $. :offset $-[0]" 
        if /(PASS)/
        or /(sweeps)/ 
        or /(Final)/;
}
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You don't say what you want to do if you find a match, or whether a match means you found any of your three words or all of your three words. The above will do the former but breaking the if into 3, setting a flag for each and taking some action (like leaving the loop early) if all 3 flags are set would be one way to do the later.