Right now either www.windows-movie-maker.org or windows-movie-maker.org is failing to resolve properly or returns a 404 error. You should set a preferred domain in Google Search Console and use a 301 redirect to divert traffic from your secondary domain.
A network solid or covalent network solid is a chemical compound (or element) in which the atoms are bonded by covalent bonds in a continuous network extending throughout the material.
Covalent bonding - giant covalent structures. Giant covalent structures contain a lot of non-metal atoms, each joined to adjacent atoms by covalent bonds. The atoms are usually arranged into giant regular lattices - extremely strong structures because of the many bonds involved.