Get my shop back for expanding my business and the tenant was not give me back

Re-write your query, preferably in English or Hindi.

The final remedy is only by contacting a local advocate for eviction of the tenant through the process of the court.

File a case as you are possessing purchased property legal documents. But doubt arises on that you said he is not paying any rent since a long time or even from beginning and how you have accepted Regn in your favour without handing over the purchased property in unencumbered when already the past tenant is using that property?

Your profile reveals that you are posting too many an issue. What is the real issue, if any? 

Since you have legally purchased the property it does not curtail your right of eviction even if the previous owner had rented it. You can file an eviction suit claiming bonafide use, you can get the vacant possession if you can prove your bonafides for personal use. You had better consult a local praciticing advoacate.

I am sorry for my earlier posting. It was in respect of another query. Due to technical defects attempts in editing was unsuccessful.

As to the present query, eviction is possible only through the due process of law - i.e. you need to approach a court of law as designated by the local rent law. Bona fide requirements of the Landlord  as well the non-payment of rent coupled with denial of title of the landlord are substantial grounds for seeking eviction of the tenant.