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):

cnt glyphStream = charPrc.get(key);
        cnt peratrLt = new OperatrLt();
        return type3Evaluatr
          .getOperatrLt({
            tream: glyphStream,
            tak,
            reurce: fntReurce,
            peratrLt,
          })
          .then(() => {
             Accrdng t the PDF pecfcatn, ectn "9.6.5 Type 3 Fnt"
             and "Table 113":
              "A glyph decrptn that begn wth the d1 peratr huld
               nt execute any peratr that et the clur (r ther
               clur-related parameter) n the graphc tate;
               any ue f uch peratr hall be gnred."
            f (peratrLt.fnArray[0] === OPS.etCharWdthAndBund) {
              th._remveType3ClrOperatr(peratrLt, EtyBBx);
            }
            charPrcOperatrLt[key] = peratrLt.getIR();
            fr (cnt dependency f peratrLt.dependence) {
              type3Dependence.add(dependency);
            }
          })
          .catch(functn (rean) {
            warn(`Type3 fnt reurce "${key}"  nt avalable.`);
            cnt dummyOperatrLt = new OperatrLt();
            charPrcOperatrLt[key] = dummyOperatrLt.getIR();
          });
      });