  The recently reported Bilinear Magnetoeletric Resistance (BMR) in novel
materials with rich spin textures, such as bismuth selenide (Bi$_2$Se$_3$) and
tungsten ditelluride (WTe$_2$), opens new possibilities for probing the spin
textures via magneto-transport measurements. By its nature, the BMR effect is
directly linked to the crystal symmetry of the materials and its spin texture.
Therefore, understanding the crystallographic dependency of the effect is
crucial. Here we report the observation of crystallographic-dependent BMR in
thin WTe$_2$ layers and explore how it is linked to its spin textures. The
linear response measured in first harmonic signals and the BMR measured in
second harmonic signals are both studied under a wide range of magnitudes and
directions of magnetic field, applied current and at different temperatures. We
discover a three-fold symmetry contribution of the BMR when current is applied
along the a-axis of the WTe$_2$ thin layer at 10 K, which is absent for when
current is applied along the b-axis.
