break the for loop

it is printing continous chain of three words ending with word null.
 
i tried in may ways but it is not helping. what i want my program to do is, if it finds the third word followed by first and second word then print it and end the loop.
  
var myplane, chWord, chWord2, chWord3, numWords;
 
for (var i = 0; i < this.numPages; i++)
{
numWords = this.getPageNumWords(i);
 
for (var j = 0; j < numWords; j++)
{
chWord = this.getPageNthWord(i,j);
chWord2 = this.getPageNthWord(i,j+1);
chWord3 = this.getPageNthWord(i,j+2);
 
if (chWord == "Applicability")
{
if (chWord2 == "Effectivity")
{
myplane = chWord3;
console.println(myplane);
break;
}
}

}
}