Attach (recommended) or Link to PDF file here:
[Hong Kong Aircraft Engineering Company Limited_1511417616.1 2.pdf](https://github.com/mozilla/pdf.js/files/1539395/Hong.Kong.Aircraft.Engineering.Company.Limited_1511417616.1.2.pdf)


Configuration:
- Web browser and its version: Chrome: 63 
- Operating system and its version: windows and macOs
- PDF.js version: 2.0.185
- Is a browser extension: No

Steps to reproduce the problem:
1. Upload the above PDF and search for "article 1"
2. PDF.js showing only **2** match But actually **4** times available.   

What is the expected behavior? (add screenshot)

![screen shot 2017-12-07 at 7](https://user-images.githubusercontent.com/6101789/33720106-ed404576-db88-11e7-9c19-cf6aea74e9f3.png)



What went wrong? (add screenshot)

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension):

if (width > 0) {
        const scale = textDivProperties.canvasWidth / width;
        if (this._enhanceTextSelection) {
          textDivProperties.scale = scale;
        }
        transform = `scaleX(${scale})`;
      }
    }
    if (textDivProperties.angle !== 0) {
      transform = `rotate(${textDivProperties.angle}deg) ${transform}`;
    }
    if (transform.length > 0) {
      if (this._enhanceTextSelection) {
        textDivProperties.originalTransform = transform;
      }
      textDiv.style.transform = transform;
    }
    if (textDivProperties.hasText) {
      this._container.appendChild(textDiv);
    }
    if (textDivProperties.hasEOL) {
      const br = document.createElement("br");
      br.setAttribute("role", "presentation");
      this._container.appendChild(br);
    }
  }
  /**
   * @private
   */
  _render(timeout = 0) {