When I do a search in the software center this is what the results look like.
I can only see the text if I select one of them.
I tried changing themes but that didn't fix it.
This might be a problem with your font. If you are using Gnome Shell, install Gnome Tweak Tool, a customization tool for Gnome Shell, with the command
Then, launch Myunity and change your font from it.