I've finished writing my thesis and have done an online plagiarism check. I used https://www.check-plagiarism.com/ to check and got a lot of plagiarism. I don't understand why. You can find an example below. For instance, I don't see where the plagiarism is in the first sentence which is marked red. When looking into the suggested URL, I don't even find the key words from this sentence there. What should I do?

[![enter image description here][1]][1] 


  [1]: https://i.sstatic.net/zpu2V.png