You can say, "The policeman was sent on a 'wild goose chase' to find the killer. All the clues that were given to him turned out to be false." What does it mean? Watch here. For more videos - go to www.khmer.voanews.com/maniandmori or www.youtube.com/KhmerSpecialEnglish. To contact Mani & Mori - write to them at firstname.lastname@example.org.