  Band structures of the neutron-rich Mo- and Ru-isotopes around A $\sim $ 110
are investigated using the triaxial projected shell model (TPSM) approach
employing multi-quasiparticle configuration space. The mass region under
investigation depicts a rich variety of band structures with well developed
$\gamma$- and $\gamma\gamma$-bands, and quasiparticle excitations based on
them. It is demonstrated that TPSM provides a reasonable description of most of
the observed properties, in particular, detailed structure variations observed
in Mo-isotopes are well reproduced in the present work.
