https://pdf.yt/d/BeioWriXAn-DkFcO

When searching the above pdf for the phrase 'acute' the second hit hightlights the nearby word ' especi'.  Almost certainly this is the same issue that I raised in #5667 

However, when examining the generated html you can see that the highlighted text is incorrect - it contains the text ' especi' and not the search term 'acute' - it is not a positioning issue.  (see screenshot).

I am using Chrome 39, windows 8.1 x64 and pdf.js 1.0.1093

![image](https://cloud.githubusercontent.com/assets/10129039/5864096/f2d665a4-a276-11e4-91fa-af6eb36f0cde.png)

}
    return true;
  }
  /**
   * Helper for multi-term search that fills the `matchesWithLength` array
   * and handles cases where one search term includes another search term (for
   * example, "tamed tame" or "this is"). It looks for intersecting terms in
   * the `matches` and keeps elements with a longer match length.
   */
  _prepareMatches(matchesWithLength, matches, matchesLength) {
    function isSubTerm(currentIndex) {
      const currentElem = matchesWithLength[currentIndex];
      const nextElem = matchesWithLength[currentIndex + 1];
      
      if (
        currentIndex < matchesWithLength.length - 1 &&
        currentElem.match === nextElem.match
      ) {
        currentElem.skipped = true;
        return true;
      }
      
      for (let i = currentIndex - 1; i >= 0; i--) {
        const prevElem = matchesWithLength[i];
        if (prevElem.skipped) {
          continue;
        }
        if (prevElem.match + prevElem.matchLength < currentElem.match) {
          break;
        }