You may want to install a software package but you do not know its package name in Fedora or finger error is made when specifying the desired package name, in these cases yum includes a search and its results as suggestions:

# su -c "yum install zim"
...
Setting up Install Process
Parsing package install arguments
No package zim available.
  * Maybe you meant: Zim
Nothing to do

Note the suggestion that perhaps you wanted to mean "Zim" instead of "zim". Also note that the package name identification is case sensitive.

# yum install zim
...
Configurando el proceso de instalación
No existe disponible ningún paquete zim.
Nada para hacer