“…These exact solutions of these NLPDEs are important for the understanding of the nonlinear physical phenomena and possible applications. In the past several decades, many effective methods for obtaining exact solutions of NLPDEs have been presented, such as the tanh function method (Fan, 2000;El-Wakil et al, 2007), the tanh-sech method (Malfliet et al, 1996;Wazwaz, 2004), the sine-cosine method (Al-Mdallal et al, 2007;Zayed & Abdelaziz, 2011), the homogeneous balance method (Fan et al, 1998), the Jacobi elliptic function method (Dai et al, 2006), the F-expansion method (Zhang et al, 2006), the homotopy perturbation method (He, 2005), the inverse scattering transformation method (Ablowitz et al, 1981), the Bäcklund transformation method (Miura, 1978), the Hirota bilinear method (Hirota, 1973), the exp-function method Zayed et al, 2012), the ( G G )-expansion method (Wang et al, 2008;Zayed & Abdelaziz, 2010, 2013 and so on. Very recently, Wang et al (2008) introduced an expansion technique called the ( G G )-expansion method and they demonstrated that it was a powerful technique for seeking analytic solutions of NLPDEs.…”