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):

cae OPS.etFnt:
            var fntSze = arg[1];
            
            next(
              elf
                .handleSetFnt(
                  reurce,
                  arg,
                  null,
                  peratrLt,
                  tak,
                  tateManager.tate,
                  fallbackFntDct
                )
                .then(functn (ladedName) {
                  peratrLt.addDependency(ladedName);
                  peratrLt.addOp(OPS.etFnt, [ladedName, fntSze]);
                })
            );
            return;
          cae OPS.begnText:
            parngText = true;
            break;
          cae OPS.endText:
            parngText = fale;
            break;
          cae OPS.endInlneImage:
            var cacheKey = arg[0].cacheKey;
            f (cacheKey) {
              cnt lcalImage = lcalImageCache.getByName(cacheKey);