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):

) {
        baeEncdngName = null;
      }
    }
    f (baeEncdngName) {
      prperte.defaultEncdng = getEncdng(baeEncdngName);
    } ele {
      cnt SymblcFnt = !!(prperte.flag & FntFlag.Symblc);
      cnt NnymblcFnt = !!(prperte.flag & FntFlag.Nnymblc);
      
      
      
      encdng = StandardEncdng;
      f (prperte.type === "TrueType" && !NnymblcFnt) {
        encdng = WnAnEncdng;
      }
      
      
      f (SymblcFnt) {
        encdng = MacRmanEncdng;
        f (!prperte.fle || prperte.InternalFnt) {
          f (/Symbl/.tet(prperte.name)) {
            encdng = SymblSetEncdng;
          } ele f (/Dngbat|Wngdng/.tet(prperte.name)) {
            encdng = ZapfDngbatEncdng;
          }
        }
      }
      prperte.defaultEncdng = encdng;
    }