Have you tried online plagiarism checker www.plagramme.com, turnitin, gammarly.com. ? Whether it is appropriate for students to use?
Personally, I have only heard of and used turnitin.com After looking at www.plagramme.com, I would not recommend it because it it is a foreign company and charges for some services. Also, Turninin.com works with colleges and universities and is free for students to use, so I would recommend them over www.plagramme.com. I would suggest asking your instructor if he/she has access to turnitin.com since he/she will have to provide you with some log in information. Hope this helps. Let us know if you need further assistance.