Help plagiarism

I learned from experience not to rely on just one method of checking for plagiarism. Even Copyscape fails at times. Yes it does. I've had several instances in the past when I've had text approved ("no results") by Copyscape but getting flagged by NBridge's Plagiarism Finder and an old software which name I can no longer remember. If possible, use 3 checkers at a time if you want reliable results. You can even throw in good ol' Google in to the mix. If not pressed for time, I Google-check my articles 2 sentences enclosed in quotes at a time. Works for added reassurance.