The Quetext system may also consider original content as plagiarized if there is substantively similar content available elsewhere in the indexed material. For example, some works could include certain standard expressions, terminology, or even commonsensical phrases that are already present in some sources. The same goes if your text has some common phrases or quotes without proper citing. In such situations, it is important to look at the text of the sections that have been ID flagged to tell what is real plagiarism, and what is plausible coincidence.