Case laws required

Hi, dear Members/Friends,

                                                 Please Help me regarding following section 12A, 12AA and Exemption section 11 of income tax act 1961.

Can anyone please provide me with all the Cases/ Case laws regarding withdrawal of exemption and registration of Trust/ Charitable institute. Which are in Favour of the Appellant/ Assessee.

The basic things i am looking for are the grounds on which the Assesse won the case against CIT, DIT or ITAT or any other Tribunal. The grounds which can stop and discharge assessee from getting cancelled the registration under section 12A and 12AA.

I have already Googled but was not much successful.

Please Help me

Thanks & Regards

Saurabh