When you submit the paper to your university, the university checks the paper through a series of specially made software to check plagiarism. Even a single similarity can cause you a lifetime ban from the institute. If you are taking thesis help from an expert out there, ask your thesis helper to prepare a write-up without copying a single thing from anywhere on the internet. This is the reason people go for reputed writing agencies who never commit such mistakes. Choose carefully and then only allow someone to write a thesis paper for you.