First, the filling modification method
This is actually easy to understand, that is, adding a large number of modifier sentences to the original simple sentences and declarative sentences, so that this sentence can be transformed into its own word order. But this can't fundamentally improve your originality, but it is easy to reduce the repetition rate. Repeated keywords in many sentences must be replaced, because these words are an important feature of the originality of the paper. But this can't pass the tutor's assessment. Simple word substitution is often not enough, because machine detection is dead but your tutor is thoughtful. Therefore, it is necessary to change the sentence order structure, modify the semantics and change the causal relationship of sentences. If you quote a lot, it will be directly identified as plagiarism, so to avoid quoting sentences directly, you need to modify them appropriately.
Second, find a reliable duplicate checking website.
We usually check ourselves online first. Because the cost of HowNet test is too expensive, many students can't afford it.
Third, go to the library to find older books that can't be found online.
Scholars all know that many theories have not changed much for decades, and even the methods in some old books are reasonable. We can go to the library to find old books with small circulation. Of course, if the topic is written by a celebrity, don't try it.