How to improve the language of my master thesis by myself? I have written my thesis on my own (with my limited English skills) and I gave it to my supervisor to check it. He said the work is fine but the writing is a bit bad and I need to proofread it by myself. I know that my English level is just below the normal and needs time to improve. However, I have limited time (a couple of weeks), so my question is how to improve my English writing efficiently during this period that will lead to an improvement of my thesis?

I have heard that there are some phrases and academic vocabulary list that are given by Cambridge University or other universities for use and are not regarded as plagiarism, does anyone know them?
My best tip for proof reading your own work is to have your computer read it back to you. We often notice how things sound weird when they are spoken compared to when they are written. 

Microsoft word includes text-to-speech as part of the Word. I use it all the time. Stand alone text-to-speech software is available if you use something else for your writing.