Hi Guys
Yesterday, I talked to an immigration lawyer, he said I can take my case to the federal court but it costs me money and time.
But today I went to our local MP office and talk to them; I showed them the evidences (OP6b) and all other documents. She told that there are a lot of troubles with this CPP-Ottawa, these guys are new and they do not know the rules very well. She is going to send a letter to the Ottawa's director and ask about my case and also another graduate student, which she also complained about her rejection. She was surprised about their double standard in their Sydney and Ottawa office and she assures me to ask clearly about the adaptability points in my case. She also mentioned that they should request a detailed work experience letter instead of rejection and not giving you the experience points. She suggested all other graduate students who have these problems (adaptability and work experience) should go to their local MP and ask them to make contact with Ottawa's office and let them know about their mistake.
Guys this is the link in order to find your local MP with your postal code:
http://www.parl.gc.ca/Parlinfo/Compilations/HouseOfCommons/MemberByPostalCode.aspx?Menu=HOC
I think if Ottawa received so many complains about this adaptability issue soon, they never make the same mistake for the rest of PhD students (Like Sydney). So please go to your local MP office and explain the situation as soon as possible.