In what circumstances will courts decline to award attorney fees to a plaintiff who prevails only on only some of its claims?

In addition, courts have declined to reduce attorney fees where a plaintiff prevails on only some of its claims, but the claims were factually related and closely intertwined. (Wysinger v. Automobile Club of Southern California (2007) 157 Cal.App.4th 413, 431 ["[w]here a lawsuit consists of related claims, and the plaintiff has won substantial relief, a trial court has discretion to award all or substantially all of the plaintiff's fees even if the court did not adopt each contention raised"].)