“…In recent years, the exact solution of non-linear partial differential equations has been investigated by many authors (Krisnangkura et al, 2012;Wazwaz, 2004Wazwaz, , 2006Shi et al, 2012;Jabbari and Kheiri, 2010;Lee and Sakthivel, 2010a,b, 2011a,b, 2012Parand and Rad, 2012;Elboree, 2012a,b;Abdel Rady et al, 2012;Honga and Lub, 2012;Abbasbandy and Shirzadi, 2010;Taghizadeh et al, 2012;Babolian and Dastani, 2012;Kafash et al, 2013;Mu and Ye, 2011;Ebadi and Biswas, 2010a,b;Kim andSakthivel, 2010, 2011;Malik et al, 2010Malik et al, , 2012Kabir et al, 2011;Feng et al, 2011;Jabbari et al, 2011;Ayhan and Bekir, 2012;Naher and Abdullah, 2012;Kraenkel et al, 2013;Taha and Noorani, 2013;Taha et al, 2013;Wang et al, 2008), who are interested in non-linear physical phenomena in various fields of physics and engineering. Many powerful methods have been presented such as the tanh-method (Krisnangkura et al, 2012;Wazwaz, 2004), sine-cosine method (Shi et al, 2012;Wazwaz, 2006), tanhcoth method (Jabbari and Kheiri, 2010;Lee andSakthivel, 2012, 2011a), exp-function method (Lee andSakthivel, 2010a, 2011b;Parand and Rad, 2012), homogeneous-balance method (Elboree, 2012a; Abdel Rady et al, 2012...…”