Primarily, you have asked three questions. Their replies are given in italics:
Can i search for another job with this same company as my previous experience.
It would be foolhardiness to ask a job in the same company. If the falsification of the employment is proved then such employees are blacklisted. This blacklist is for their internal recruitment purposes only.
They had taken a letter from me saying all the documents submitted are fake , Does this letter will have any impact to my future ?
When the falsification of the documents is discovered, HR of your company should have ordered domestic enquiry. Rather than conducting the enquiry, they have adopted shortcut and have taken statement from you. It was for your removal and nothing else.
Does the company can take any legal action against me?
Companies do face problems of this kind. Such cases are not new to them therefore, they may not approach police or send you a legal notice. Nobody has time and energy to do this wasteful activity. However, if they do so, then it is your luck.
Final Comments: - Did you abandon your job in South Africa? Do you have proper relieving documents? Based on this experience, why you are not trying to get a similar job? Rather than spending time in deceitful activities, it is better if you get a job that pays you less but maintains your dignity.
24th May 2016 From India, Bangalore
You did wrong by going the fake way.
Now what is written in the blank paper is unknown to you.
Company took a shortcut,browbeat you based on your fake documents and terminated you.
Now as learned member above has suggested look around for jobs-this time with true details.
24th May 2016 From India, Pune