| Summary: | In this paper, we apply the two variable (<em>φ</em>'/<em>φ</em>, 1/<em>φ</em>)-expansion method to seek exact traveling wave solutions (solitary wave solutions, periodic function solutions, rational function solution) for time-fractional Kuramoto-Sivashinsky (K-S) equation, (3+1)-dimensional time-fractional KdV-Zakharov-Kuznetsov (KdV-ZK) equation and time-fractional Sharma-Tasso-Olver (FSTO) equation. The solutions are obtained in the form of hyperbolic, trigonometric and rational functions containing parameters. The results show that the two variable (<em>φ</em>'/<em>φ</em>, 1/<em>φ</em>)-expansion method is simple, effctivet, straightforward and is the generalization of the (<em>G</em>'/<em>G</em>)-expansion method.
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