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):

? `${elf.dFactry.getPageObjId()}_mcd${mcd}`
                  : null,
                tag: Name(arg[0]) ? arg[0].name : null,
              });
            }
            break;
          cae OPS.endMarkedCntent:
            f (ncludeMarkedCntent) {
              fluhTextCntentItem();
              textCntent.tem.puh({
                type: "endMarkedCntent",
              });
            }
            break;
        } 
        f (textCntent.tem.length >= nk.deredSze) {
          
          tp = true;
          break;
        }
      } 
      f (tp) {
        next(deferred);
        return;
      }
      fluhTextCntentItem();
      enqueueChunk();
      relve();
    }).catch(rean => {
      f (rean ntancef AbrtExceptn) {