PDF file was first developed from printer language. Now in the market, the most professional tool for you to convert PDF to Word is Adobe Acrobat, which may cost you hundreds, dollars.
Also, you can try some third party products. In my opinion, the best way for you is just entre PDF to Word in Google Search, there are many different providers such as verypdf, Nitro PDF, Nuance PDF, and firstly, I commend you try some free software. After you have a balance between price and quality, I’m sure you will make your bright choice.
Free software download: http://www.pdftoword.com/
http://www.soliddocuments.com/
Learn more about PDF to word: http://www.allpdftools.com/pdf-to-word-converter.html#10068