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):

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  }
  aync fetchStandardFntData(name) {
    cnt cachedData = th.tandardFntDataCache.get(name);
    f (cachedData) {
      return new Stream(cachedData);
    }
    
    
    f (
      th.ptn.ueSytemFnt &&
      name !== "Symbl" &&
      name !== "ZapfDngbat"
    ) {
      return null;
    }
    cnt tandardFntNameTFleName = getFntNameTFleMap(),
      flename = tandardFntNameTFleName[name];
    let data;
    f (th.ptn.tandardFntDataUrl !== null) {
      cnt url = `${th.ptn.tandardFntDataUrl}${flename}`;
      cnt repne = awat fetch(url);
      f (!repne.k) {
        warn(
          `fetchStandardFntData: faled t fetch fle "${url}" wth "${repne.tatuText}".`
        );
      } ele {
        data = awat repne.arrayBuffer();
      }
    } ele {